I stopped paying attention to Ben 10 a long time ago. Is he just as much of a snotty brat as a teen? Or did he at least learn how to control transformation time? If he did, I suppose Alien X would give him the win. If not I could see every incarnation except maybe movie version of Hal outlasting the timer and then giving Ben the spanking he's so desperately deserved.
Doesn't alien X not work correctly? I'd say green lantern wins. It's as simply as picking him up and tossing him ...really really really hard (into spaaaaaace). Lol. I find the power ring to be more reliable than the Omni whatever. Mind you I haven't seen much of omniverse so maybe I'm missing something? Doubt it tho.
Movie Hal is the only green lantern I worry about in this fight.