It shouldn’t. Max gross is max gross. They can’t exceed the weight limit per the UPA. How they allocate the weight is up to them I suppose. But they can’t use the old CRJ700 Max weight.

I have no idea what the fuel burn is for a 550 at #65,000 vs a 200 at MTOG. Just curious to see what the actual difference would be vs a 700 at MTOG going against a 200 at MTOG