G3 was PowerPC though, not 68k. ARM is actually the fourth Mac ISA, after 68k, PowerPC and x86!
You are correct of course!
I should remember really, I worked at Apple in the UK during the 90s! :-)
Guess I'm getting old LOL
I think my mind was getting it's memory mixed up with the PowerPC 601 and 603!
Too many product codes in my brain! :-)
Benchmarks at the time claimed it was 2x faster than the PII.
https://www.baltimoresun.com/news/bs-xpm-1998-04-27-19981171...
So true or not, it must have at least been in the ballpark!
As I Mac user at the time, I remember the G3 providing a measurable performance leap!