Why/how does Zip 6502 work?

[RKFAIRCLOTH@unca.edu (Rhonda K. Faircloth)]

I read a few things about the 14mhz 65816 and that raises questions for me.
The Apple //e and //gs both have the motherboard speeds hardwired. This
is why the Zip gs needs to be on a card rather than simply replacing
the cpu in socket. However, the Zip 6502 for the //e doesn't need to be
on a card, it simply replaces the normal 6502. I think I have an answer,
can anybody verify this? I know that the 6502 requires more than one
clock cycle to perform an instruction, sometimes 5 cycles. Is the
Zip 6502 able to do it's instructions in less cycles, perhaps only 1
at it's highest speed? Am I even close?