What distinguishes the confidence level of *Dreadnoughtus*'s weight estimate compared to more fragmentary giants?

Answer

A more substantial, known set of bones, particularly the limbs

The weight estimate for *Dreadnoughtus* is considered highly reliable because it possesses a substantial, known set of bones, especially the robust limb bones necessary for calculating body volume and stress testing.

What distinguishes the confidence level of *Dreadnoughtus*'s weight estimate compared to more fragmentary giants?
fossilanatomydinosaursauropodtitanosaur