It was never going to do more than get people talking, the number of subreddits isn't as important as what the long term impact to users and quality will be. They have signaled their interests are not user centric, it wont be the last outrage I'm sure but they'll keep getting away with it if there isn't a clear alternative and people keep going back.
It might depend on the definition but I'd probably expect engagement/total to play a bigger factor.
As it is it weights very heavily towards evenness:
A:
(11, 10)
=21
B:
(99, 90)
=21
They have the same ratio of votes but I'd expect
B
to be more controversial since more votes are tied up in the controversy / it got more attention. Maybe most people just don't care aboutA
so they didn't bother to vote.