Xenoblade has been called several times "Best RPG of this Gen" so it deserve a spot.
I totally forgot about Kingdoms of Amalur: Reckoning & Dragon's Dogma which were really awesome too but IDK if they'll make it.
The point is that this year has not so many big hit games comig or already released compared to other years like on 2011.
For Xenoblade, I played an hour of it and got bored. I really wouldn't call it the "best RPG of this gen" especially compared to having a stellar line up of western ones like Mass Effect, Dragon Age Origins, etc.
I'd say Dragon's Dogma because it used a lot of mechanics and it felt very bold. People complain about Capcom all the time and games like this really take some heat off of them. It's a new IP in a time when everyone is just continuing their old IPs, it has a rather bold vision, and it chronicles a history of modern Capcom gaming with other franchises. It's part Monster Hunter, part Elder Scrolls, part Devil May Cry, part Resident Evil, part Dark Souls, part Shadow of the Colossus. It's not a perfect game by any means but it's bold, daring, and just really damn fun.