Yeah, if you read that abstract (I posted in on my journal entry here: fav.me/d6rvw8d
), it implies that through the notion that the fusion of the cervical ribs comes after neurocentral fusion, along with comparisons with Diplodocus and Giraffatitan.
Assuming that CM3018 would have had a mass of ~25 tonnes, then, based on the implications of the abstract, the Oklahoma Apatosaurus would have massed in at ~50 tonnes, and a hypothetical mature Apatosaurus would be at ~100 tonnes
And yet, the JPW site depicts Tyrannosaurus as larger than Apatosaurus
But I guess that with their kaiju mosasaur thing, a kaiju tyrannosaur isn't too far off...