They actually go back and forth in terms of mainline titles.
During Pokemania in the late 90s/early 00s, Pokemon sold much better than Mario but in the DS/Wii era the return of 2D Mario saw it surpass Pokemon and now on 3DS Pokemon is ahead of Mario but not by a huge amount.
When the herd loses its way, the shepard must kill the bull that leads them astray.







