Based on what? He's already like 27 himself and has shown far too many limitations for me to agree with that. Impossible to predict the short term future, let alone the long term. I expect Golovkin to stay at MW for a couple more years either way.
Go watch his fight where Marco Antonio Rubio tooled him for seven rounds and then knocked him out. Then watch the fight right after that where Joachim Alcine decisioned him. Middleweight is weak, but it's not that weak. Peter Quillin, Daniel Geale, Martin Murray, Matt Korobov, and Ryota Murata would all beat him.
Lemueix is a fraud, when he gets blown up by Triple G he will fade. The guy is an overrated over hyped fighter. Bute 2.0
Lemiux was like 19 when he fought rubio ffs, rubio had a long career and over 50 K.O's at the time. They put him back in with alcine way too quick.
I'm pretty sure most of the guys who comment about the Lemieux-Rubio fight haven't even seen it. The first 5 rounds are Rubio running backward and Lemieux catching him and unloading on him for 20 seconds he gets away and runs some more. Then Rubio lands a couple of good shots in the sixth. The seventh and final round Rubio hits Lemieux behind his ear which is an ILLEGAL RABBIT PUNCH he goes down is off balance because his equilibrium was off and the corner waved it off way too soon. Get over it. Lemieux is the truth, but GGG would beat him.
Lemieux should be able to beat Rubio in a rematch. Should. It would be catastrophic for his career if he couldn't, but a rematch would be nice.
He was 22. Alcine and Rubio fight nothing alike really. And if you are going to "rule" any division, you have to put in better performances and show less glaring weaknesses then Lemeiux did in those fights, in my opinion.
If I remember correctly, Rubio had lost every single round before the final round and most of them were landslides (which is why he was so gassed; punched himself out).
I agree with your first two stanzas. But then starting with "The seventh and final," it becomes a Fanboy Alert... Lemieux is so true. So true to himself. He's batting .500 against C+ level fighters, the highest caliber he has faced (Rubio, Alcine, F. Guerrero, Rosado).