I saw this video earlier and all I can say is they put minimal effort on the up port and that's the only reason they look so similar.
It looks like they redid the lighting engine and the game naturally benefits from a higher resolution so everything looks sharper. Other than that, it looks like the exact same textures. I hope they altelast addressed all the bugs that would in some places break the game.
I just played through the first stage of the PSN version, and yeah...it still looks very much like a Wii game. It looks like a few textures may have been cleaned up here and there and the game overall looks cleaner than the version I played back on the Wii. Still, Extraction was a good-looking Wii game, and this is a pretty good looking game on PSN (and it looks a
lot better than the original when I played it on this TV). As for how the game feels played with a Dualshock, yeah...
The best thing I can say about these controls is that they are functional. You
can theoretically get through the game with this, but it is
far from ideal. The button mapping is formatted to more closely resemble those of Dead Spaces 1 and 2, and the reticule scrolls across the screen faster than I thought it would. But there's no getting around the fact that this was made for a pointer device, and however fast the reticule is, it's just not fast or accurate enough (even with aim assist turned on) to work when you're swarmed by necromorphs. And don't even try to get to the hard-to-grab items with the DS3: they were hard enough to nab with a Wiimote, and they're pretty impossible to grab in a split-second with a control stick unless you already know they're going to be there.