To be fair there were plenty of lazy EGA ports (and ST ports) to the Amiga as well. A bunch of popular franchises like Sierra and AD&D “gold box” games especially spring to mind. The games that showed off the Amiga the best were the ones that were developed on the Amiga first and then ported to other systems like Defender of the Crown, Psygnosis titles, etc.
(Note: lots of Amiga games were natively only 16 colours as well to save DMA bandwidth on unexpanded systems, but with the advantages of a larger palette to choose from, hardware sprites, dual play fields, blitter and copper effects, etc.)
