Bryan winning by pinning Orton, and Batista blowing up and attacking and destroying Bryan after the match gives Batista a reason to turn heel, and gives Bryan his first feud with the belt.
That's certainly a thought, especially since we've already seen plenty of Daniel with other main event performers......after all, he could have another feud with Randy Orton after (and
if) he wins the title but it would be nice to see him tangle with someone new. Of course, having his first feud with Batista could also be a decent excuse for Batista to take the belt away and put Daniel back in the underdog role, which is where I feel he fits best, given the direction of his character this past year.
As for Batista, so much depends on the conditions under which he returned to pro wrestling. If WWE had to cater to his every whim to get him back, Daniel's number might be up (as world champion) before he even starts. Hell, management might be so excited about giving Batista the world on a platter (see: Rumble, Royal) that
everyone will have to take a back seat to Big Dave, at least for awhile.
On the other hand, if Batista has signed a standard contract, maybe he has to perform as directed; same as everyone else. Batista's odyssey is going to be interesting, particularly as pertains to Daniel Bryan.