Yes, it's true that for horsepower x86 kicks any other desktop architecture's ass these days, but that wasn't nearly so true back in the early '90s
The point PC was viable future winner for UK computer gamers was mass adoption by software houses of VGA graphics as standard. Why?
386 VGA/SBLASTER owner buys SF2....pretty slow and unplayable. 18 months later sells it and gets 486DX66 +GRAVIS etc....suddenly old unplayable game is arcade quality. Had 256 colours but is faster and sounds better automatically.
A500 owner buyss SF2...32 colour slow rubbish....3 years later he gets a 4000/030 and loads SF2....STILL rubbish (same speed, 32 colours, SFX/music). Has to pray a good AGA version is released and buy a 2nd copy if it is ever made! No reward for his £999 investment!
And that my friends is the problem, in 1990 most arcade games on PC had 256 colour graphics like Super Nintendo and their
old PC games bought before upgrading to better PC automatically improved without the need for a single line of game code to improve. VGA mass adoption was the key. EGA Cinemaware games will forever be inferior to Amiga versions even on an running on Intel i7 920 PC today. After VGA though it was game over. 256 colours was enough even for 3D games like Doom or Screamer Rally comparedto PS1 RidgeRacer/Doom.
Big problem for AGA AND Atari Falcon potential purchasers no?