Comment by LZ_Khan
Hold up, what's the "revolution" between the PS1 and PS2? More processing power?
You could argue that no consoles in the Xbox or Playstation line are revolutionary, as they're the same format as the original SNES just with more buttons and processing power.
I would say the major shifts in controller type is simply a much rarer change than simple spec upgrades.
A lot more processing power, at a time where that made a huge difference in the graphics.