[Avshalom]

Science says that it's faster to hit a distant infinite target given sufficient mouse speed vs a small but local target.

given sufficient speed.

However it says nothing about whether an application's menu bar is important enough to warrant that extra acquisition speed.

Also the mac menu bar does not present an infinite target, particularly if you have any significant horizontal velocity, which is extremely common with wide screen monitors or multiple monitors.

Also with the advent of large/multiple monitors there is the need to change where you're looking causing extra delay for refocus.