I was wondering too so read this:
"(1) 3-on-3 overtimes ‘count’ toward a team’s win-loss record in the official history books. However, for pairwise ranking purposes, a 3-on-3 OT win counts as just 55% of a “win” and a loss is 45% of a “loss.” The net result of this is that overtime, while fun to watch, has an incredibly small impact on the final rankings and is not much different in the grand scheme of things from the game ending in a tie.
(2) Tie games after 3-on-3 go to a shootout, but those results have no bearing at all on the national rankings.
(3) This is the part that I really hate - In order to accurately document a team’s record, you basically have to both list its win-loss-tie record inclusive of 3-on-3 OTs, as well as then break down how many OT wins/losses and shootout wins/losses it has. For instance, a team that has played six games, won 2 in regulation, lost 1 in regulation, lost 1 in overtime, won 1 in overtime, and won 1 in a shootout, has their record listed for posterity as 3-2-1, but to be correctly documented in the standings, you have to show that they are 2-1-3 over 60 minutes, 1-1 in OT, and 1-0 in shootouts.
(3a) And now, according to Jimmy Connelly of USCHO, it looks like the NCAA selection committee is basically not even going to take 3-on-3 overtime results into consideration at all as it selects the NCAA tournament field except as a tiebreaker, even though the results are considered “wins” for historical record-keeping purposes."
Clear as mud