As much as I'd like to see them as well, I'd imagine we won't get much as that's Google's IP, but would love to know generically if that's true from anyone who has worked with said libraries.

Are you trying to make a point?

Well for one, see Guava and a bunch of the stuff that has been rolled into java proper over the years.

What is the equivalent that it is much better than?

Seems to be a competitor to Apache Commons, can decide for yourself whether or not you think it's better.

Apache Commons (Collections and some others) is a very old, basically legacy library, they are not nearly equivalent in terms of functionality so comparing them makes no sense. Google Guava is a nice library but it doesn't have any alternatives that I know of so it can not be used as an example to support the above generalization (which would need many examples to hold any weight anyway).

Angular vs React is a counterexample I can think of. Angular is shit.