Re: Where it all began...for some
And whilst the Apple II may not have been big in the UK (and it did have cheesy graphics, but that had nothing to do with the CPU), some huge and massively popular games, like Prince of Persia, started life there.
Similarly, the BBC Micro was regarded as one of the quicker 8bit machines - and it was packing a 6502 family CPU as well.
If you look at raw clock speed, then yes. The Z80 is quicker. But clock speed doesn’t tell the whole story - if it did then an over clocked Pentium 4 would toast a Ryzen (which clearly isn’t the case). The 6502 is more efficient, getting more work done per clock cycle. When you take everything into account, the Z80 and the 6502 are pretty comparable.