Maybe? Did I get my math right if we were?
I obviously am not smart enough to do arithmetic. Ask the guy who posts pictures of seven foot teratorns. He seem to know a lot.
He’s making quite a name for himself on science forums. First new thing since Ted Holden.
Your problem begins with your inability to see that it makes more sense to overturn physics rather than to question assumptions about scaling.
Bow down to the priests of the Electric Universe, heathen.
I’ve done the scaling math on a dozen raptor birds and found predicted weights typically off by thirty percent.
The wing loading of the largest teratorn, even using SM’s weight, is half the maximum allowable for flight, assuming our current gravity, atmospheric density and oxygen content. We know that oxygen content was higher at the time of the dinosaurs, making energy conversion more efficient.
The heaviest bird observed to achieve flight was a young albatross weighting 35 pounds. There are flying birds unable to take off from a standstill, or without headwinds.
But it makes far more sense to assume the laws of physics have changed rather than to work out the details of pre-history on the assumption that physics is constant.