Guys? Lycra
disguises muscle tone. It's under tension, and the material largely tries to go from highest point to highest point. The tension in the 90 degree offset direction will pull it down a bit, but not as much as you'd expect.
Toby
did get pretty damn fit. As fit as someone can get and still look like Spiderman. It has nothing to do with genetics or workout-ethic or whatever. It's the nature of the fabric. That's why people wear spandex and lycra as work out clothes: they deccentuate your curves.
You need to use a muscle suit under a lycra outfit to give you
completely unrealistically cut musculature, so that it looks "right" after the lycra smooths it out.
You want a good example? In
The Running Man Arnold Schwarzenegger at his absolute prime got stuffed into a bright yellow spandex unitard. And guess what?
Geeze, look how skinny he is. Man, some people just don't get big or will need 10X more training and discipline to gain muscle mass, some have better genetics and add muscle mass with little training. Why didn't Arnold put the effort in to actually bulk up, instead of being completely flat he could hav-
...Oh. Sorry Arnold.
Look, the movie spider suit was a bit better than Arnold's suit. It has more pieces than Arnold's, which means more seams and more opportunities to control the tension, letting you control how close it follows the musculature. Also, the glued on web gives you a bit more control.
But there's only so much that you can get lycra to follow muscles closely, without it being baggy and wrinkled elsewhere.
So it's easier to make it look consistently good by slipping a muscle suit under there too.