Can't we all just live with the fact that both are fun ?
Airsoft - Lots of cheaters, fun ass game none the less. More realistic LOOKING guns. No goofy hopper or tank. 700 round Mags are a bit over kill compared to a 200 round hopper.
Paintball - Hard as fuck to cheat, you get painted... Guns look stupid, but without a hopper or tank some do look pretty real. Especially RAP4's
EVERY THING ELSE BESIDES WHATS LISTED THE ABOVE IS THE SAME BETWEEN THE TWO.
Edit: Tiberius just came out with a new paintball round with fucking fins on it, sure they're expensive as dick but the effective range with the proper barrel is 250 feet. I wanna see air soft guns do that. >:|