Before I get started on Weegie and Sheik, I've been scouting the other character boards and see what they think how easy or hard of a matchup against Yoshi. If a character isn't listed, then they haven't discussed yet.
Captain Falcon - They have listed Yoshi as their easiest fight..... but it might just be a placeholder because they have no information whatsoever.
DK - Has Yoshi listed at a 6:4 DK
Fox - Has listed at a 5:5. Strange, I would think Fox has the advantage here...
Ice Climbers - Has listed Yoshi as a "5", which is the equivalent to a 9:1..... Something wrong here >_>
Jigglypuff - Has listed as an advantage to her. This is what they said:
"Yoshi really has some good options against jiggs, such as his Fsmash, Dair, etc. but most are pretty easy to evade. It may seem like Yoshi's recovery is really difficult to gimp at first, what with him having super armor during his second jump and all, but with lack of a good Up B as a recovery he can be easily dealt with."
Dedede- Ironically, Yoshi is the only character they haven't discussed yet.
Kirby - Has listed as a 5:5
Lucario - Has listed roughly 6:4 Lucario, but hasn't gone into detail yet... Maybe I'm overestimating them.....
PT - Has Squirtle as an advantage, Ivysaur Neutral, and Charizard Disadvantage. The polar opposite of what we have
Toon Link- Has 7:3 Toon Link, but no reason on why.
Wario - Has listed as 6:4 Wario, but was made before the discovered infinite.
Wolf - Listed as 7:3 Wolf, but hasn't gone into detail
Zelda - Has listed as "Slight Advantage"
As you can see. Most underestimate us, while the rest don't even bother >_>.
Anyways, Onwards to Weegie!
I have little information
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. Luigi in the Air are pretty average and really nothing special, Though the Bair and Uair can be a problem sometimes. He plays better on the Ground, but not by much. His Fireball's are design to set up an approach, and thats exactly what he'll do, so you gotta look out for that. SideB can be countered with a pivot, but it's pretty hard to do so, especially if he gets a critical. DownB is pretty annoying, but can be counterd with a Pivot Grab. The other thing is that trying to Edgeguard a Luigi Physically is just pointless. DownB Spikes, and SideB can kill (But can screw him up if he already used his DownB). You can try to go for an Dair against his UpB, but he usually never need to resort to that. It's better to go with Egg's. Overall, It's kinda an easy fight, but I have limitied experience with him. I'm going to say 6:4 Yoshi for now
Sheik I even less experience on, so I can't comment
I'll will, though, bring up another character. Ike to discuss
Ike Is probably one of the easiest opponents to deal with if you just play it safe. Almost all of his moves are laggy. Ike usually is going to use his least laggiest moves, which is his Jab, Dsmash, Bair, and UpB. His Jab is pretty hard to deal with, bu is mostly used to set up Air's. His tilts are all laggy, but they pack a huge punch. His F and Usmashes are even more laggy, but have huge range. His Dsmash is actually quick, but doesn't have good range or knockback. Ike's 4 of 5 airs are laggy and are quite easy to avoid, but are still scary. Yoshi can Chaingrab Ike, but the main problem that neither of his charges (Dash attack and SideB) can pivot grab! So the only way to grab Ike is the old fashion way. Edgeguarding a Vertical Ike is just suicide, but a SideB you can just jump in front. The better thing is that your DJ Armour can take the hit and shouldn't kill you
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. Overall, Ike is pretty easy to deal with if you have a good defencive game, but if you don't pay attention, then he can win just as easily with his shear brute force. I say 6:4 Yoshi