Ryu has to become "meta" before MM's good match vs him has relevance.
Lets say Ryu sees an explosion of growth and high level mains. He starts beating on Sheik and ZSS in high stakes tournies. Utilt locks and kill confirms out the booty. Now Ryu becomes "THAT" guy to beat.
THEN Megaman becomes relevant because he has a good match vs the King.
Characters that do well vs Ryu.
Diddy, Pac-man, Megaman, Lucas, Marth, Lucina, Roy, Ike, Villager, Olimar and Yoshi. This is all imo. Sonic does not beat Ryu imo. Ryu has answers to all of Sonic's stuff, the key is choosing the right option. Pika def doesnt beat Ryu. No way. Ryu can shut down every button Pika has with light ftilt, hard jab and fair. QA loses to SH nair as well.
Keep in mind I dont think Ryu has any match worse then 4/6. The raw killing power and threat of his damage keeps his ratios from spiraling out of control.
Maining Ryu myself, I know that Link is either an even MU or a win for Link. All the aforementioned characters here have either disjoints or projectiles with them, and Link has both, as well as good frame data and ways to shut down Ryu's recovery. Link's N-Air can completely defeat Hadoukens, his F-Air can gimp Ryu if Ryu uses Focus Attack or Tatsumaki, Link's D-Air works surprisingly well to meteor Ryu if Ryu uses Tatsumaki or FADCs out of Focus Attack.
Link's also got the aforementioned projectiles, as well as relatively great projectile games that'd shut Ryu's attacks down. Ryu's also a short jumper, so it's no problem for Link to U-Air, U-Tilt or U-Smash juggle Ryu because of this, but Ryu can possibly answer with his aerials. However, Link is a character with a large disjoint in his hitboxes, and Ryu's hurtboxes and hitboxes are together, so using Ryu's attacks are not safe against Link if Ryu's not close enough.
Now on Ryu's side, Link is also susceptible to being combo'd, but Link himself can get out of combos more easily than Ryu. Ryu needs to be more reliant on trying to get the gap closed on Link, something necessary for him to defeat Link. Using F-Air > D-Air on Link's shield to pressure him is a good idea, as long as Link doesn't grab Ryu. It's always best to FADC away from Link if you're directly above him, because he might use U-Air, Tilt or Smash, and that can heavily beat Ryu. If not FADC, try Tatsumaki to get the space, though be careful as Link might be able to close in the space too.
Ryu's other problem to be addressed is his lack of good air inertia, since Ryu's known for his horrible air inertia. It's best not to try edge-guarding Link away from the edge of the stage, since Ryu will probably die if he goes too far from the edge of the stage (again, Ryu's air inertia is terrible). Time your setups and aerials wisely with Ryu.
For grounded attacks, it goes to Link once more because none of Ryu's tilts, except F-Tilt, would be able to have such incredible range like Link's. They have the speed, but not the reach. Link's have moderate speed and reach, so Link definitely beats Ryu's tilts unless Ryu can close the gap. Using Tatsumaki on the ground is a death sentence if Link blocks it. You might as well deserve getting KO'd by him if he blocks you at moderate damages, because that F-Smash is a hard hitter. If not F-Smash, Dash Attack into a read D-Air will do the trick.
In terms of Smashes, Ryu has some damaging smashes, but Link's got knockback AND damage to his smash attacks; Link's damage and KB output are overall better than Ryu's in uncharged smashes. However, Ryu has the better frame data with his smashes, but again, he needs to close in the gap because of Link's disjoints.
So Link is definitely a problematic character that would have to force Ryu to come close to try getting him, right? Well, Link is also good at footsies, so that's a challenge against Ryu. Link's D-Air meteor is perfect on Ryu if Ryu uses Tatsumaki to recover (the upper part of Ryu is left wide-as-hell open and is completely vulnerable when the attack ends with its moderately high endlag).
So I believe Link could go 50:50 if Ryu can just close the gap, but if Link has a good player, it's definitely going to be a 40:60 in Link's favor.
Lemons aren't really an answer. You can't win with just lemons and they aren't broken enough to shut characters down (they aren't broken at all).
It was a joke; in all seriousness, though, Lemons can be good for stopping a Ryu who's trying to close in the gap against MM. But in practical terms, MM shouldn't use them unless he wants to stop Ryu from rushing in, especially in the air.
Ghostbone
Not before factoring in how he does vs. the rest of the cast, which is well, but the other 3 arguably all do better. So I don't think he's the best even though I unashamedly believe he's top tier now.
Amadeus9
That's funny, because MK is probably one of Pika's worst MUs. I can understand why you'd think that, and I'd also add that his stellar disadvantage is less of an asset against a character that can just death combo you at certain %s. BUT I do think he's better than Rosa/Sonic, and possibly Mario as well. The first two already suffered vs. ZSS (though it was at least winnable in Sonic's case), now I think Rosa is solidly -2 and Sonic is at the harder end of -1. And since she's so ridiculous, it's hard for me to rank them over a character who previously and probably still beats her, especially when I don't think they perform better vs. Sheik. Mario can definitely handle Sheik and probably ZSS as well, but I'm not sure about Ryu yet (Ally struggled vs. Mr-R and got bodied by 9B, whereas Anti made Trela look easy). It kind of hinges on how consistent Mario players can get kill confirms so as to keep up with Ryu in the killing department. A Mario that fishes for usmash will definitely lose to Ryu in the long run.
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