There's two sides to this coin. There's realizing that from '85-'90 the Amiga rode tall in the saddle, then there's outright delusion: believing that the Amiga was still a viable platform into the late 90s, that AGA was some kind of awesome panacea of graphical capability (it wasn't; it was a chopped down version of a chipset that was late and throtted back by Commodore management and outdone by SVGA when it was released) and that OS4 was poised to take the world by storm.
Most people had seen the writing on the wall by 1994 and simply acknowledge that the PC side of things wasn't so terrible.
As for processor architecture, until the end of the '486 days and early into the P5 arch life, it was neck and neck. The 68k series hit a wall and that was that, Motorola made a clean break, went PPC and for a good long while had the backing of Apple and IBM - but there was never a "clean" implementation of PPC on classic Amigas, and no classic OS was created around it. It was half-steps with WarpOS and Power-Up. A version of OS4 for classic hardware didn't happen until what, 2008? 2009?
Amithlon showed that a tightly integrated emulation solution was a step in the right direction. That Amithlon could run pure x86 code was more proof of it: imagine all the apps being scrambled for now (decent web-browsers, for example) being at your fingertips circa 2002!
You can cry about it, you can hold up this or that datasheet from nearly 20 years ago but until you build a time machine that can warp the world back to 1990, that's where any arguments about what CPU is best for the desktop remains. Games went 3d, 3d that required a different approach than what the Amiga had or has. The apps that the Amiga was really a champion of? Rendering? Yeah, you know what that requires? LOTS AND LOTS OF CPU CYCLES. Ask me how long I'd rather wait for a CGI sequence to render: minutes on a PC or days on an Amiga. Simple as that.
That's what I saw, that's why I left. Maybe I'm foolish enough to let myself get trolled by people who rave about the importance of polling a joystick port at 1000hz or whatever, but waving around your AmigaDOS manual telling me I don't know from computing because I don't live inside the Amiga Reality Distortion Field and wear the rose-colored contact lenses doesn't make me want to see your side of the argument! I used an Amiga. For years. I know what it can do. I know what it can't do.
