It'll be fine. They just want people to review it on current gen, since that's where they expect to pick up most of their sales. If they sent the 360 or PS3 version, everyone would say "game looks like shit", and if they sent the PC version console people would wonder "butbut wat aboot the console experience"?
Sending the current gen makes the game look good and makes undescerning 360/PS3 owners think that it'll look that good on last gen so they'll run out to buy it.
What are you talking about? Ubisoft doesn't give a crap if people buy the new consoles, they only sell the games. They are allowed to provide different copies of the game to different reviewers. They don't only have to send out all console versions or all PC versions. There are entire review publications that only do PC reviews, it wouldn't make any sense to give them a console copy, so Ubisoft basically ignores them.