I dunno.
I'm not sure we have anything in the US that comes as close to say... Brazil/Argentina and then Real Madrid/Barcelona/Chelsea in Soccer. Chelsea's had 13 different managers since 2003. Real Madrid has had 16 APPOINTMENTS (they've rehired a few guys.. they are on their 3rd manager so far this year)... Even Barcelona is on its 9th coach. They fire guys for going on losing streaks. Any losing streak. Not sure Manchester United is there yet, but PSG is getting there and even though they're ultra pragmatic - Bayern Munich can be brutal, too... they've hired 13 guys since 2000.
Here in the US? Eh - not too sure i'd want to be the football coach at LSU or Alabama. The Red Sox and Yankees are tough jobs too both with lunatic fan bases to keep happy. I mean w/ the Red Sox they're on what - their sixth manager since 2000? The Yankees are on their third?
I actually think the Sox job is a bit harder than the Yankees. Mainly because the market is a little smaller and much more claustrophobic. And Boston media is such a bunch of miserable bastards. Almost every one has built their careers on negativity. If you are winning, they are still trying to crucify you.
In NY, there are definitely bright lights, but the City offers so much, and has so many distractions, that you can 'hide' a little bit. Boston, you can't even go out to eat without getting killed by the lady behind the counter.
Boston doesn't have as many distractions overall; half the population has only the Sox to think about. And New Englanders tend to be a bit more miserable by nature.
Either way it's splitting hairs. jmo