Interesting comments from Collins, none of which clarify much why he did not like Floyd. “Because people put us in the same box” says more about audience taste, deficient as it may be, than it says about Floyd.
There are several distinctly different eras of Floyd. The Syd Barret years, the pre-Dark Side of the Moon era, and then the Roger Waters dominated era.
I personally prefer the pre-Dark Side era, especially Meddle.