Thats a 10% gain which might help you in some games to stay above the 144Hz or even 200Hz refresh rate of your monitor. Does not matter for most of us, but some hardcore esports gamers might care. I guess that's a very small minority though.

if you think a 10% fps gain is silly, why buy a high-end cpu for gaming at all?

also the "only at 1080p" meme is not really true for some esports titles. counterstrike is so cpu bound that it really doesn't matter what resolution you play at.