If developers are to develop for such a machine, there will probably be a lot of programs/games out not using the full potential of the faster A1.
The problem with the old Amiga 600 vs 1200 is the lack of appropriate API abstraction e.g. titles was tied to a particular chipset.
My POV is an ecosyetem system similar to Pentium II@233Mhz to Pentium III @1Ghz scenario, where Windows (with DirectX API)runs them all. Replace X86 as PPC and Windows as AmigaOS4(or MOS) for Amiga's case.