This argument doesn't make sense. If you want to assume there are three sections of players, we can do some assumption for visual representation:
0 Battles in Subs (We can assume a large number, so perhaps 75%?)
1-5 Battles in Subs (remainder between the two is ~15%)
6+ Battles in Subs (you suggested <10%)
The above example can be mathematically represented with the following formula:
([0 Battle Size] x [0B No %]) + ([1-5 Battle Size] x [1-5B No %]) + ([6+ Battle Size] x [6+B No %])
which reads as...
(.75 x .43) + (.15 x .23) + (.1 x .11) =
.3225 + .0345 + .011 =
36.8% "Against Adding Subs"
This uses the size sampling estimations listed above. The worst possible option would be if the 0 Battle Category represented 99.999% of players... which would mean ~43% "Against Adding Subs".
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The above example can be looked at as "Around 1/3 of players dislike Subs", but it also indicates that "Around 2/3 of players are ok with Subs being in the game". In terms of game content reach, the majority are not against the addition of subs as content in our game.