If you take that position, then it's almost as irrelevant to compare MOS and OS4 then, given that the only non-classic system that will run both is the Peg 2 and they aren't new or that easy to find if you are a new user. In that case, you are probably going to be looking at a Sam to run OS4 or a Mac to run MOS. MOS doesn't run on the SAM and OS4 doesn't run on the Mac (well, you can just about boot it if you know what you are doing).
Well I ment more powerfull hardware then the classic Amigas, not any specific hardware in mind, but feels a bit unfair to compare OS9.3 on a PPC Amiga with a faster OS on much faster hardware.
No, he asked about OS4, period. He didn't ask about alternatives and he didn't ask about hardware either (he opened a separate thread for that).
Then my bad, but still its a good way to compare 2 OSes with eachother as I said before.
I think it's the most logical comparison to make. You need to know what benefits your next OS (plus whatever hardware it needs to run) is going to give you over your existing one.
Thats true, but still comparison between MorphOS and OS4 is important to, as I have written in previous posts.