that won't decide anything unless we then later decide "ok this is the cutoff point of damage where a move becomes broken. hey look, stealth rock is above it, well time for ban!" or we'd have to devise one before testing.
If Stealth Rock does a stupidly high amount of damage per match, say upwards of 300%, then we should ban it. Being able to kill off half a team with just one move is ridiculous.
If it's lower, like say ~200% then we should consider voting on it's ban, but if it's around 300% then there definitely should be a vote.