Hmm, interesting. I suspect that WRXs have changed over the years, but my '02 was simply awful in the snow, even with snowtires. Compared to our Quattros, well, it simply wasn't a comparison; the Audis rewrite the laws of physics and the Subaru didn't (that was with the same size/model Blizzaks too)
I've had plenty of two-wheel-drive vehicles that were a lot better in rain/snow than that WRX, at least when I had the right tires on 'em....but again, I recognize that they might be completely different these days.
Sheesh, with all the snow outside this thread has me missing my *old* quattros with their lockable diffs and on/off switches for the ABS...sigh...