About Apples and PC's and other such fruit... (Mac question)

[PureEvil]

Okay, I know a whole lot of not much when it comes to Macs, so I'm wondering if any Mac knowledgable people around here could answer me a question...

As I've come to understand, processor wise, Macs and PCs aren't speaking the same language.

That is... Let's take one I'm looking at right now, for example, a PowerPC G3 at 700Mhz isn't the same as a Pentium 3 or whatever at an equal 700Mhz.

Processors and processor speeds aren't at the same scale (Or maybe I'm wrong... I'm just going off of what I know, which isn't a whole lot).

So, I was wondering if some sort of Mac-loving GameTavernian could kindly explain to me what a PowerPC G3 at 700Mhz (Just as an example of something I'm currently viewing in my browser) or some other Mac-dealy would be equal to in PC-processor terms.