The five years that In Living Color was on, here's a short list of who was on SNL:

Mike Myers, Chris Farley, Chris Rock, Al Franken, Adam Sandler, Rob Schneider. David Spade, Robert Smigel, Phil Hartman, Norm Macdonald, Jay Mohr, Sarah Silverman, Janeane Garofalo.

That's better than ILC in box office. (Every other measure is subjective)
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Personally, I don't get why people feel the need to argue this one when the answer seems obvious. I'll say it once again, In Living Color was comparable to the best eras of SNL and much better than the worst years of SNL.