I'm no expert in the field but Zorro 2 is 16 bit and Zorro 3 is 32bit, therefore zorro 3 has a larger address bus allowing more instructions, therefore it should run a little faster. Thats why I'm guessing my A2000 with a 25mhz A26030 shows as running slightly slower than an A3000 with the same processor on sysinfo.
Somebody else may be able to give you a more technical answer ??
