@green_skaar: well, Powergirl have kept up with Flash in speed so that should be enough to prove she's far faster than him. i'll see if i can find the scan
Honestly, i can't see Hulk being faster than a kryptonian. Can u?
If I had to make an educated guess, I'd say he's not faster however I wouldn't say he's completely unable to hit them. Flash is a different beast altogether!