That gym is in the vicinity of my home, so I could potentially keep leveling it up if they'd give me some fucking revives. I would say the turnover is pretty average, but I've held the gym all night with just one pokemon, so it's just got to last the day. I've never seen such a beast team with 3 Snorlax in it though, so this is new.
Also what I would give for that gym to have been a pokestop instead :/