Playing City of Heroes under Ubuntu

I'm just amazed at how good City of Heroes/Villains looks on Ubuntu (playing under Crossover for Linux):

http://pics.livejournal.com/jackal/pic/005dsa06

http://pics.livejournal.com/jackal/pic/005eqwzq

http://pics.livejournal.com/jackal/pic/005dt7hh

It's playing on a pentium 4 (single core) CPU box with an ATI card that's at least 4 years old, and still it looks and plays amazing!

Update: Hardware info

$ grep name /proc/cpuinfo 
model name      : Intel(R) Pentium(R) 4 CPU 2.66GHz

$ lspci |grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc R480 [Radeon X850XT]