I haven't run RUSLE in a while but I seem to think that drilled beans were predicted to erode more due to the increased amount of soil disturbance the drill does vs a planter. Again, it has been awhile so don't take that as gospel. Maybe I will pull up RUSLE and try it today at lunch. But this is a model not necessarily reality....

ETA: I should quantify this is based on no-till production not conventional. With tillage the drill vs. planter might be a moot point...