I don't see this at all. Quillin was conserving energy in that fight because he has a legitimate workrate problem and was befuddled by N'Dam's movement for large portions of the fight. He got his knockdowns yes, but plausibly lost every single round save 4 and 6 going into 12 and could easily have been down in the fight. Golovkin may likewise have problems in those areas but he's actually gotten the job done before he's had the chance to look gassed in his fights. His pressure is also loads more effective than what Quillin was doing even when picking his punches.
Are you ignorant? Watch the Ouma fight and tell me Golovkin has gas problems. Triple-G threw 126 shots in round 9!
:roll: I was saying it's possible Golovkin could have the same problems late in a fight that Quillin has, not that he actually does, and that we've never seen him deep enough with a quality opponent to make that determination.