Today on ESPN radio they asked the question; is it harder to pitch a perfect game (there have been 21) or harder to hit 4 homeruns in a game ( 16 times, recently by Josh Hamilton.
54% said, 4 homeruns.
I wonder how different the results would have been if there were more 4 home run games than perfect games? I think both accomplishments are rather tough, but I'd say 4 home runs is tougher.
