The question is not whether AmigaOS is a better OS/platform than MorphOS or vice versa. The question is whether a unified platform would be better than both.
That's still not a unified platform. 68k is left out of both even though that's the largest group of current users with the largest collection of existing software.
PPC accelerators literally or effectively don't exist for most of us and the lucky few are only somewhat supported by either of the new OSs.
Basically, the two splinter groups are pulling the core users in different directions rather than becoming part of the core platform.
We Classic users have been so distracted by the infighting that we've forgotten that those two companies should be courting us instead of fighting amongst ourselves on their behalf.
IMHO, they should work on improving the Classic 68k so that the there is less incompatibility and a smoother move between their OS and Classic.
Who wouldn't buy a MorphOS or AOS4 680x0 ROM and OS for their Classic if it was still backwards compatible with AOS3? They've both shown us they can be compatible on a foreign CPU, so they could do it on 68k.
Since OS4 is effectively made by a custom hardware company, why not make accelerator cards for Classics?
I'd wager that a lot more people still spend money on their Classics than buy into the PPC platforms combined. Why don't they even try to embrace that market?
Whoever could grab the Classic market would own the platform by default, but neither seems to be paying attention to it.