B2/W2 I think are still better, simply due to more content and Pokemon World Tournament which is far better then Battle Maison/Battle Tower/Battle Subway (But not Battle Frontier). Once we get Z version though...
That will certainly be the best.
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Eh. I think BW2 is a better overall game still, as much fun as I am having with X/Y.
This. It still has that fresh new game feel to it for me. Don't get me wrong. And there are plenty of great things about it. But, in a lot of ways it's no B2/W2. Of course that may just be because Gen 5 reached my personal ideal of what I want of a pokemon game both in game and online. Not to say, XY haven't improved upon that in many ways. But it constantly feels like a few steps forward and far many more back. It's purty and not a bad game at least. And welp the third versions (sequels or not) always make the gen, so X2/Y2 or Z will at least be likely to be far superior to B2/W2.