@Fishy-Fiz
The CPU may not be so powerful but the chipset gives a bigger boost to Amiga-style games than to RTG games. Also, the 68000 processor is on par with a 386SX so a 286 would struggle at running Amiga games even if it had the same chipset.
@Foleyjo
There is an effort underway to make a new game editor that resembles Backbone on Amiga. We're going to write it in PortablE on AROS and see to it that there are custom runtime libraries for AGA. I'm not so sure about ECS but we might be able to go back that for also.
See here for details. To join the team contact me or Cammy. We meet on IRC on Sunday at 20:00 GMT (or Monday morning if you're in Australia) at #amigae on irc.Freenode.net .