Given that NHL teams play twice as many regular-season games as MLS teams do, and their playoff series are best-of-seven rather than single-game, and these are all per-game averages, these numbers make a lot of sense.
I posted the following in this thread more than four years ago, and it still checks out:
MLS is not a Ponzi scheme, because in a Ponzi scheme early investors are showered with above-market-rate returns, which MLS has never done. Rather, MLS is essentially WeKick–like WeWork, but for minor league soccer.