So let’s just be clear here: you think slurs on a football field should attract harsher penalties than say, punching someone out Barry Hall-style.
Those two things are not necessarily tied together, and so this conflates the issues.
I don't think their comments were about their views on suspensions that are given for violence.
Perhaps they think that slurs should get hefty suspensions, and also that there should be more harsh suspensions for blatant violence? Both of those things can be true.