I did the liberty of comparing "lengths" it out.
While it's fairly "rough" and quickly done, If you compare the "shadow image" you can see that Ridley's tail goes from the Large pillar(with the green circle in it.) to the middle, where his hands ends. it's at a slight angle.
If you look at the shadow, you can see that Ridley's wings go from approximately the middle, to OFF the stage.
Take this as you will, like I said, it's really rough and quickly done, but going from the pillar to the center is a HUGE length.
Also note, samus is crouching. Upright she's not that "long" It's also hard to find a picture of bowser and pikachu close to each other, so I guessed pika's length based on the picture of the Ridley shadow.
It's all a guesstimation, but it's a rough look at it. I'm sure somebody could improve upon it easily.
I did it as close as I could, but obviously it's not perfect. I don't really expect to convince anybody, nor do I want to. Just something to add to the conversation is all.
He's the shadow for comparison to the above post. Note the angle of the tail/hands. Wings are also at a sight angle. Obviously. So his wingspan is actually LARGER than I've shown. Also, the other pikachu(the back one) is actually covering where the wing ends. "VERY" close to the middle of the stage.
The weird camera angle in the shadow image makes all this comparing hard and fairly meaningless though.
Again, this is ALL my opinion. I know I'm not going to persuade anyone, nor is that what I wish. Merely just observations to add to the discussion.
Just don't flame me too hard, please. D: