Differences in gameplay

How much of the gameplay do you guys think will carry over from one version to the next? Competitively speaking, are they essentially the same game but with different stages? Or can they really be regarded as two separate games? Have you guys heard much about this from people who've tried them both out?

The way I see it. They are gonna play pretty much the same, if not exactly the same. If anything maybe just a bit different since obviously the visuals are way nicer on Wii U. Competitively speaking I say they'll be the same with just different neutral/counter pick stages. I haven't heard much from anyone who has tried them both out.