Jab - TL's Jab 1 starts frame 6 with 20 FAF while Link's Jab 1 start frame 7 with FAF 28 (a result of the Jab nerf). Jab 2 and 3 are exactly the same frame data wise, but Link's jabs set up better for mixups (though none of it is really true and requires reads) and have more range. However both jabs are pretty slow, with TL having slight faster startup and less commitment (but less range) on his Jab 1. Before Link's Jab got nerfed I'd say his was better by a large margin, but now I'd say Link's jab is only slightly better only because of range/mixup potential.
Dash Attack - There is no debate here, TL's Dash Attack is much better being frame 9-11, FAF 40 while Link's Dash Attack is frame 20-23, FAF 57. Yes, Link's Dash Attack hits a lot harder but it is extremely telegraped and only "reliable" use is punishing missed techs after a falling nair. TL's Dash attack is a better burst/neutral option (something I wish Link had retained from Brawl).
Ftilt - TL's Ftilt is F9-13, FAF 34 while Link's is F15-19, FAF 38. Despite TL's Ftilt having faster startup, Link's Ftilt is overall more useful with more range, killing potential, and being safer on shield (because it does 13% compared to TL's 9% with comparable FAF). In pure frame data terms though, TL does win here.
Utilt - TL's Utilt is F8-12, FAF 26 while Link's Utilt is F8-12, FAF 36. Link's Utilt has similar startup but much worse FAF and combo potential than TL's Utilt (though it does kill and have better range). Overall TL's Utilt is better both frame data wise and overall.
Dtilt - TL's Dtilt is F9-10, FAF 23 while Link's Dtilt is F11-12, FAF 29. TL's Dtilt is a faster poke but doesn't lead into anything unless it trips (maybe it has combos at very low percents). Link's Dtilt is slower but has much more combo potential (leads into Uair/Up B until mid-high percents, 26/25% combo and technically his best low % punish without a bomb), damage, and range making it a safer poke on shield. Link's Dtilt also has a spiking property with sweetspot. (though its hitbox for hitting below the ledge is kinda bad). Despite being slower, Link's Dtilt is overall better.
Fsmash - TL's Fsmash 1 is F15-17, FAF 49 while Link's Fsmash 1 is F15-16, FAF 52. TL's Fsmash 2 is F12-14, FAF 50 while Link's Fsmash 2 is F12-13, FAF 68 (though this doesn't matter as much since you probably should not be going for Fsmash 2 if Fsmash 1 missed). TL's Fsmash has better KBG, but lower BKB, making is better for killing across the stage (it also does 2% more than Link's Fsmash combo). Frame data wise and overall, I'd have to give this to TL given the high damage, lower FAF, higher activeness (1 more frame than both of Link's Fsmashes), and killing ability. Link's only real niche over TL here is the larger range and ability to kill better near the ledge.
Usmash - TL's Usmash is F11-17, FAF 43 while Link's Usmash hits anywhere between F10-45 (10 frame gaps between each hit), FAF 78. While Link's Usmash does trade off activity, power, and range for poor endlag, overall TL's Usmash is better because it's much much less committal and only 1 frame slower startup.
Dsmash - Both TL's and Link's Dsmash is F9-10, FAF 50. TL's second hit of Dsmash comes out F17-18, while Link's comes out F21-22, with no difference in overall move endlag. Major difference is that TL's Dsmash sets up into the second hit while both of Link's hits have strong KB. Link's Dsmash has more range, is safer on shield, and is better for 2 framing (because it has more range). Frame data wise, the only difference is when the second hit comes out, can be both a good thing and a bad thing but overall negligible.
Grabs - Both come out Frame 12 (TL's grab is active till F18 while Link's is active till F17) with the same FAF of 62. However, Link's frame data on dash/ pivot grab is objectively better with F14-21, FAF 66/ F15-22, FAF 67 vs TL's F14-20, FAF 72/ F15-21, FAF 72 dash/ pivot grab. On top of that, Link's grab range is longer. When factoring in grab combos/followup into this, Link still has the advantage with throw combos at most percents, including a 50/50 kill confirm, though TL does have Bthrow as a kill option he doesn't get as much out of grabs before that. Overall, Link's grab and grab game is better than TL's.
Aerials - This is getting a bit long, you can reference Kurogane's site for specific frame data but:
Nair: Link's Nair is comes out one frame slower, has lower endlag, much lower ending lag and better AC window. It also has more combo potential and lingers long, at the cost of not being disjointed, but I think Link's Nair is overall better.
Fair: Both come out F14, though TL's Fair has less aerial endlag (likely because it doesn't have a second hit). Link's Fair's landing lag is much better at 12 vs TL's 18. Link suffer 23 frames of lag after Fair 2 and TL suffers 24 frames of endlag after Fair. At first glance it may seem like TL's fair safer, but the landing lag makes it unsafe on most grounded shields. TL's Fair does hit slightly harder than Link's Fair 1. Overall, Link's Fair is better in a vacuum simply because its safer, decent approach option, and can pressure platforms better.
Dair: This is no contest really, Link's Dair comes out faster, can be used offstage, safer on shield with bounce, less endlag on landing (you really shouldn't be landing with it anyway), and has more kill power.
Bair: Link's Bair has less endlag, starts up one frame sooner, and more combo potential. TL's Bair does more raw damage and is disjointed, but I think Link's bair is overall better both frame data and utility wise (neither is really that impressive compared to the top tier bairs in the game).
Uair: Pretty much the same frame data though TL has slightly less landing lag. TL's Uair has slightly less range (still pretty hard to challenge), but better kill potential. Slight advantage to TL overall, with negligible frame data differences.
Specials - Again, reference Kurogane for exact numbers.
Neutral special: TL's uncharged arrows have 5 less FAF than Link's but the same startup (F18). Fully charged, TL's arrows are slightly slower (this doesn't matter as much as uncharged arrows). Link's arrows travel faster (can lead to locks), but slow moving arrows can be good too in aiding a projectile wall and halting approaches. TL has the advantage frame data and overall.
Side special: Pretty much the same frame data, but TL's Boomerang is much more useful with slightly more damage and a returning hitbox. Frame data is equal, but overall TL's Boomerang is better.
Up special: Link's grounded spin attack is one frame faster (result of the buff), but ends one frame later. TL's grounded Spin attack is more active with the last hit on F51 as opposed to Link's last hit on F40. Aerially both start F8 with TL ending at F81 as opposed to Link's F82 (shouldn't matter since you should sweetspot the ledge either way). Link gets the slight advantage in frame data and overall given how powerful Spin Attack is as an OoS option (for characters with bad OoS), 1 frame can make a difference.
Down special: Both bombs generate on F17 with FAF 40, but Link's bombs explode 3.67 seconds from generation while TL's bombs explode 4.98 seconds from generation. Both characters have the same great item toss stats, though Link can bombslide. Frame data wise, the bomb pull itself is equal and overall its hard to say. In a vacuum, Link's bomb have more hitstun, blast radius, and help more for recovery, but can't play around with his bomb as long which mean he has to pull more bombs (which is pretty laggy for a non hitbox move).