In defense of Amiga, PCE was a Nippon product to the bone, and at the time* Japanese devs were absolutely killing it when it comes to 2D action games. So it has benefitted from having their uber-talented devs exploiting all its strengths and churning out some amazing titles. Being a console with dedicated custom hardware also did not hurt.
Conversely, Amiga's main market was Europe, and it was a home computer, so not a 100% target audience for arcade gaming. I guess these factors contributed at least in some degree to the fact that so many of our ports were inferior, when given a bit more TLC (aka publisher budgets/dev time) they could've been so much better.
*well, at any time, I suppose
