If you have PA support, where you're going direct to FOH, then your bass is more important, because the amp is taken out of the equation for your FOH sound (unless you're running post EQ from the head).
But the OP stated the scenario is no bass in the PA, so the audience is only getting the amp sound. In that case, I believe the amp is more important.
But the OP stated the scenario is no bass in the PA, so the audience is only getting the amp sound. In that case, I believe the amp is more important.