Originally posted by FrothByte
If we were to take the "he's so fast that he needs super durability to withstand speed" argument then this should apply to all other speedsters out there.
It pretty much does. 😐
Additionally, some speedster's ability to withstand these absurd forces comes from a magical force called the "Speed Force."
http://dc.wikia.com/wiki/Speed_Force
Until you provide evidence* that something very similar to the Speed Force exists in the film, you can't just make up magic and abilities that were not seen on screen (because that's against the MVF Golden Rule).
*It's unnecessary to do so as the Speed Force does not exist in the Marvel films or the Marvel Universe (616). Quicksilver's power is natural/comes from his mutant ability.
Originally posted by FrothByte
So while theoretically correct, I don't think we can just take it as fact when discussing superheroes simply because they have been proven to not have super durability.
Fortunately or unfortunately (depends on your perspective), you cannot dismiss character feats that were seen onscreen. Based on what was seen onscreen (and Quicksilver lacks the Speed Force), Quicksilver can withstand absurd forces on his body: we can't dismiss it just because we don't like it.
Here's what everyone needs to understand: any speedsters, besides those using things like the Speed Force (even then, there are exceptions to that), as a physics necessity, will ALWAYS have to have absurd amounts of durability and strength to be speedsters. Nobody can dismiss that just because they don't like the implications.