1) Isn't that tick rate not frame rate? Is there really a tangible benefit to rendering 140fps over 60? I always read that beyond 60 had huge diminishing returns and was hard to detect as a human.

2) Is it really necessary for anything beyond a competitive shooter with bullets flying around? Outside of the bullets, fighting games are as or more precise than the average shooter and 60fps continues to be the standard there and I don't think >60 tick rate would bring any big value to a fighting game. A 60fps game with no buffer can already yield situations that are close to or beyond human execution (see: Melee)

I'm not actually sure requestAnimationFrame() in a browser ever gets you >60 fps. At that point, honestly, you'd probably need an independent render thread (doing some degree of interpolation) and stick to a 60fps logic tick. Which you can theoretically do in JS using web workers, though I know message-passing incurs some serious overhead in that case.