Either it's two players with 51% and 49%, in which case the 51% is "most common," or it's many players, with 51% and a bunch of other percentages that collectively add up to 49%, in which case the 51% is still the most common, perhaps even more so.
I'm not shilling for Apple here, as Android was clearly most common From 2011-2021, and still is world-wide. If anything, I'm shilling for the English language.