That is not a troll but a damn good question. Of all the reviews read so far, there hasn't been a single one looking at Boot Camp and Parallels running on the Mac Pro. I'm sure the Parallels folks are working hard on a release for the Mac Pro due out before the end of the year.
As for myself, I'm holding back on picking one up to see if it is economic to replace both my Mac Mini and my custom build Windows box with a single Mac Pro running Boot Camp / Parallels with two monitors. Where the can mix between Mac and Windows desktops as my workload changes from day to day
I'd say it'll be a more than decent gaming machine. I believe the new Mac Pro uses GPUs that are based upon the FirePro W9000 line, which, according to these benchmarks, are top of the line as far as game performance is concerned.
So yeah, the new Mac Pro will tear up just about everything you throw at it. I'd say it'll work as an excellent (if not expensive) replacement for your Mini and Windows box.