"iOS software uses reference counting for memory management, running on silicon optimized to make reference counting as efficient as possible; Android software uses garbage collection for memory management, a technique that requires more RAM to achieve equivalent performance."

This statement is nonsense. Reference counting is typically used in garbage collection. https://en.m.wikipedia.org/wiki/Reference_counting

It is equivalent of saying "On iOS devices the memory efficient Chrome app can be used, but on Android phones a browser is used, which requires more RAM for equivalent performance."