[endtime]

Well that's not actually how games are decided these days. It's often something like "did Z have queens blocking his ramp before the blue flame hellions got there?" or "did P get scout the tech lab on the starport and put down a robo in time?", even at the pro level. A lot of other games end with a two-base timing attack (e.g. fast blink stalkers). Good games will have some eco harass, but more along the lines of dropping 8 marines and killing several workers, or totally taking out an expo with infested terrans. I don't think I've ever seen a single worker kill be significant, or even multiple instances of similarly small magnitude. The APM and attention it costs to harass often isn't worth killing a single worker.

There's a lot of depth to SC2, but I think it's a mischaracterization to say that it's a game of such tiny advantages, at least at the level it's played today.