Well, to be honest, AROS' greatest strength is it's wealth of available platforms. It's greatest weakness, OTOH, is that it is open source. MHO, of course. To me, the difference is that open source gets done it gets done, whereas for profit gets done _when it's needed,_ although not always as well as open source. Now, not to dis MorphOS, but if AROS were for profit, we'd probably have as good a solution -- including 68k compatibility-- as MorphOS and many more licenses...
that is offtopic again
but to respond... to say that AROS is less advanced/progressed as MorphOS is generally said not true. It is true that both OSs have their strength and weaknesses and there are differences regarding 68k integration (that are unavoidable). What the MorphOS team members always understood is that it is more important to have a stable, bugfree OS with a decent desktop to "sell" it (motivate people to use it). On Opensource "selling" it is not that important, instead people implemented features they wanted to have like MESA/Gallium. Desktop was always the weakest point but that will be solved with Magellan. So we should talk again after Magellan used as base for the distributions in a couple of months.