Alex is probably the best striker in the history of the sport so far. I mean he's not just powerful, he is remarkably precise, even more so than Silva/Israel. I don't know enough about Hill's ground game, but if he's even remotely proficient, he should hit that as hard as he can. Even Jiri, arguably the most wild and unpredictable fighter, wasn't able to get the "puncher's chance" win. Not to say Hill can't find that, but it's just not likely.
No matter what it's going to be an awesome fight. And while I believe that Alex will win pretty handily, I wouldn't put serious money on it.