The test results you have selected are very old and may not represent the current state of Wine.
Selected Test Results (selected in 'Test Results' table below)
Single Player Story Mode
Single Player Terrorist Hunt
Multiplayer Coop Terrorist Hunt
Multiplayer Story Mode Coop
Official Map pack
What does not
Mouse does not wrap without "MouseWarpOverride"="force" registry key
FPS drops dramatically for a few seconds the first time enemies are spotted, but returns to normal afterwards.
With "MouseWarpOverride"="force" enabled, the mouse is unusable in the menus, so you'll need to use the keyboard for that.
What was not tested
Some game modes
3rd party mods
Hacked widescreen modes
I've played this for countless hours with my geek-ass wife. It works great in Wine over LAN for coop play, better than Windows in my experience with it. Here's the general specs of the systems I ran it with:
22.214.171.124.amd-x4.desktop.01 SMP PREEMPT i686 GNU/Linux
AMD Phenom(tm) II X4 955 Processor
nVidia Corporation GT200 [GeForce GTX 280] (rev a1)
126.96.36.199.x2.hwf.01 SMP PREEMPT i686 GNU/Linux
AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
nVidia Corporation G92 [GeForce 9800 GTX+] (rev a2)