Overview of the collection
At 2018/01/01, when the collection had 1000 entries, there were 112 zero-variate data types, and 153 univariate data types, in 588 combinations, written by 125 authors. So, few entries share the same data type combination and the number of data types is very much larger than the number of parameters. This argues for comparison on the basis of parameters, since all parameters were estimated for all species. Moreover, by being mechanistic (= based on first principles), DEB models interprete data, rather than just describe it, so can reveal inconsistencies in data and predict un-measured properties of species as functions of parameters.
Apart from extant species, the collection also has a number of extinct ones, demonstrating that DEB models can still be applied if data availability is poor. Examples are: Deinosuchus, Pterodaustro, Tyrannosaurus, Archaeopteryx, great auk and Steller's sea cow. Needless to say, however: more data generally reduces uncertainty in parameter values.