@adonay,
The CPU is fine. Way plenty for Q2. The BVision is a Permedia 2 GPU, and while it isn't as good as the Voodoo3, it should be fine for Q2 as long as you don't harbor ridiculous expectations, like doing 60FPS at 1280x1024. The benches I've seen on PCs are 20-30FPS at 640x480.
The Permedia 2 was meant to compete with the Voodoo2, with the Permedia 3 competing with the Voodoo3.
By the way, Quake 3 does run on the Permedia 2, but generally only at about 1/2 to 2/3 the speed of Q2 with the same settings. With the release of the Q3 code last summer, maybe the Amiga might see a version sometime this coming year.