Don't worry, I hear your point. He IS big at WW, that's well known but being big at WW doesn't translate to being your premium weight at MW at all. I think that's your point anyway
176 is a lot... especially when he looks in good shape. This is gonna be a hell of a fight. Brook's gonna give GGG some problems.
I don't think anyone on here except for blinded fanboys are saying otherwise. Majority consensus is that brook would fit well into JMW and would be a small MW.
Ricky Hatton was 190 between fights. Means very little. Brook looks like he's been powerlifting in those pics. He has huge legs and shoulders like a little girl. This wouldn't be a bad fight (although not a great one) except for one factor, the timing. Like it or not this one came after the Canelo - Khan debacle, and Brook has to move up higher, now GGG's team of pathalogical liars is in full damage control.