
I really beg to differ.
To be frank, I'm not sure why everyone on both sides is concerned with Yoshi getting edgeguarded. It's never been a factor in this matchup (or most of Yoshi's matchups) in
any Smash game so far (this is fact). The meat of this matchup happens onstage. There's not a single move Mario has besides maybe down tilt that he cannot use to reckless abandon without fear of punishment. His tilts are so weak, they are literally
too good because Yoshi cannot get out of tilt spam at even mediocre percentages. Short hop fireball at a character and a half length away is pretty much all any Mario needs to shut Yoshi down.
Stop Mario from approaching? The only tools we really have that stop Mario approaches are up tilts, maybe pivot grabs, and eggs. Upsmash would be really good against Mario approaches if he weren't so low to the ground when he comes at you. Cape to forward smash actually works for Mario sometimes in this matchup if he picks the right move to try it on.His back and up airs straight up cheat in this matchup, no lie. Mario perfectly hits Yoshi's one blind spot, and does it to perfection.
That being said, Yoshi beats Mario offstage for no real reason; it's just silly. We have edgeguarding pretty easy and dash grabs give Yoshi plenty of slide to get to the edge much faster. Mario has approximately zero edgeguarding options on Yoshi--if he gimps in this matchup, Yoshi screwed up something serious.
Yoshi's other one-ups over Mario are infinitely longer lifespan, aerial range advantage, and ground power. If Yoshi connects with a forward smash (good luck) at any reasonable percentage, Mario might as well just jump to the blastzones and call it a stock. Yoshi also has enough airspeed to combine with his range to really zip around Mario in the air. Mario's only real safe aerial
in aerial combat, I think, are neutral air and up air. When Mario is airborne and Yoshi is grounded, that's a different story, but when they're both in the air, I think these are Mario's only saving graces.
I hope I'm not making the matchup seem like Link in how lopsided it is, but you basically have to outlive Mario until he makes a blatant mistake and capitalize on it. If Mario really wanted to, he could stand in place all match just using cape, spotdodge, and A button moves and do copious amounts of damage. Of course, no Mario is going to do that and what's good is that a good deal of Mario's moves are often very unsafe to use in many situations, so he'll be operating on a risk/reward system with how he's fighting Yoshi. You just have to force or bait the risk and not give him the reward, as cheesy as that sounds.
I will go for 6.5:3.5 Mario, but am willing to settle for 6:4 Mario. Those are my feelings on the matchup.