IMO Pit is the go-to counter to Link. He's got the movement options to deal with Link's wall of projectiles, the sheer
speed in his entire moveset to stuff most of
everything Link has (can anybody say
frame three uSmash), some terrific range in those normals, and possibly one of the most effective projectiles in the entire game, with even more utility and control than boomerang (which Pit's tools can also just shut out).
Marth can be spammed out rather easily, and is floaty enough to see some early and reliable kills off of dAir, and Sonic's movement can be shut down by Link's safely-ranged sword attacks (even nAir beats out Sonic's spinning attacks most of the time). Bombs can be used to just blow Sonic up as he rolls over them, which goes about the same way for a Marth who is swinging for the fences.
Pit's just got everything that can put Link into the worst positions Link can be in. An even
longer ranged game that is
fast enough to keep a constant pressure on Link, similarly to how Falco can do it (Arrows of Light
really don't care about Hylian Shield the same way Falco's blaster does) helps maintain a presence at even
Link's most comfortable ranges, for one. Second, once he's in, Pit's in to stay, with some of the
fastest normals in the game (that hit like a freight train, mind you), and a grab that combos into pretty much
anything that Pit has to offer, all of which will almost certainly be faster than anything Link might have to offer.
People say that matchup is 50/50, Pit mains will say it's 55/45 (Pit), but I honestly think it's 70/30 (Pit).
He doesn't need nerfed. People are crybabies.
Link definitely needs to be toned down in some respects.
- Rang should be 2.5 rang sans catching animation
- uTilt recovery should be longer and/or active frames reduced to make it not link into itself so well
- Jab2 should have higher knockback and/or later IASA so as to not have so many guaranteed followups (this in itself makes actually confirming through Jab1 important)
- Dash Attack should start a little later (maybe on frame 9, so it doesn't hit nearly as high)
I think Link could stand to see some improvements in some other areas, though.
- less durable bombs; making the bomb recovery more feasible and at the same time making shield pressure through projectiles a stronger option, further focusing Link's game on zoning
- slightly larger box on Hylian Shield, further emphasizing Link as one of the go-to projectile users with the tools to deploy them and deal with them at his own range
Most of the changes I can dream up for Link are along the lines of decreasing his sword's effectiveness and increasing his focus on projectiles/dealing with projectiles, making him the archetypal 'zoner who struggles up close', where
now he sits as a sort of clunky jack-of-all-trades kind of character. He's fast
enough to where his 'trouble zones' aren't
too troublesome for him.