After checking out actual footage of the game, I'm not seeing a number of the things that some other articles complained about. Of course, there was one article I read where half of the complaints seemed to stem from the fact that the tester wasn't used to holding a Vita and thus ended up pretty much continuously abusing the back touch pad functions. What wasn't mentioned was whether or not controls could be mapped differently, which I would imagine is an option. As for the load times, well, they aren't great, but I could live with them if I had to. I would prefer it if they were cut down to <10 seconds, but if not, well, the load times on Sly Cooper: Thieves in Time for the Vita were awful, and I had no issues with them.
Another thing I didn't notice was the apparently terrible slowdown when only facing even a couple of enemies. I honestly don't understand where a number of the complaints came from. The game looks good, and it seems to play well. As for the enemies disappearing after being killed: they're exploding and their loot is dropping. This was likely a concession made to lower the number of unnecessary objects on the screen and in the environment at one time. In the end, it won't make a major difference if that even ends up being the case in the final version.
For any complaints about this version, do remember: we're still a couple of months before the intended release. They still have time to smooth the edges, and I'm sure they will.
As for the footage being on a debug Vita: is there a tech difference between the two, and does it really matter in the long run?