Agreeing to suspend disbelief and speaking purely in the point of view of comic authenticity, many of you guys are whack!
First of all, why does it matter that speed is the Flash's "only" power. You make it sound like a person cannot be good at more than one thing. Furthermore, both the Flash and Superman and and ALL OTHER heroes have powers because of special circumstances, not because they worked hard and practiced. It's not as if the Flash is faster because he dedicated all his time to speed.
Second, why does it matter if Superman spun the world around? He did that while flying. The OP said on their feet, on Earth.
Third, using Smallville as evidence doesn't make any sense. Like another poster said, if you used X-Men movies as your basis, you'd be off about Wolverine's height.