I am sure that it will be the case...
However I'm also sure that in a year from now, there will have been a few more awesome games that will have come out, for both patforms, and that I will still be enjoying it.
And the good thing with consoles is you won't have to update your hardware when the next new games comes out. The longer a console is out, the more developers get a feel for the programming and the better the games will get. A perfect example is the last Playstation 2 game I bought... Shadow of the Colossus.