Pretty new to speedrunning here and trying to learn how things are scored, can someone explain to me the relevance of RTA? Most places people seem to be implying that IGT is the metric by which speedruns are ranked, but if that's the case is there a reason for RTA to be measured at all (on RSG runs, of course) and displayed on the leaderboard? Is it that a large discrepancy between the two is taken into account or something?