You can't really compare any 50" machine to something bigger...it's not fair to the smaller machine. The 50"er is a compromise for small trail access and space constraints. And usually price.
If you don't need those, the bigger machine will always provide a better ride, more capability on though obstacles. Not to mention more space.
That said, the 700 is a better direct comparison to the wolverine, but in some ways, the X2 is kinda between the 700/1000. It's certainly got way more engine than a 700.
If I were to do it again, I'd go with the X2 or maybe the 1000. Not so much for anything the 700 (my 2nd) is doing wrong as much as I wonder what the SxS world is like outside Honda. All of mine have been Hondas, and I wonder how much I'm giving up for that.
And then there's the ever popular KRX and RMAX. Those are really next-level machines. The KRX is big, bad, and built like a brick s*** house...but maybe too big for my tastes. The RMAX is more what I want, but is expensive.