Yeah I see what you're saying. I think i'll respond to your other post though. This is simply the way I'm looking at it.
Now, for all I know, this could be wrong. But, if you look at where Charizard's shadow ends up, it takes up about roughly 1/6 of the shape in the middle of the stage. It's not that big of a shadow really.
Compare this to Ridley's shadow:
View attachment 14067
Again, this is debatable, as anything is. But that is a LARGE wingspan. Charizard takes up roughly 1/6 of the shape in the middle of the stage. Ridley, or at least his wingspan...almost goes half the length of the stage. That's quite a difference.
Granted, we can't really tell where Ridley is positioned as far as how high he is above the stage. But by no means is he close to Charizard's size. Mind you, Charizard isn't as large as Bowser, but this is still quite a bit of a difference in size.
This is just something I'm pointing out. It might not mean anything. Nobody knows right now I suppose. But my point stands on the fact that the Boss Characters, such as the Yellow Devil, are meant to be much larger than the playable characters, likely to give the players a better chance of hitting them or what have you. Clearly, Ridley's shadow is much, MUCH bigger than Charizards, and I'm even acknowledging that Charizard is not the biggest in the game. But he's certainly not Pikachu either.