It’s similar in the sense that it’s a pseudocylindrical projection. Unlike Robinson it opts for a strict equal-area property at the expense of less accurate direction and distance. In that respect it’s more similar to Eckert IV. Another interesting pseudocylindrical projection is Winkel Tripel, which explicitly tries to balance three types of distortion.

I’m not objecting to the Equal Earth projection, which is a perfectly respectable contribution to the pseudocylindrical repertoire, but to the language this site is using to promote it.