yea the scoring was completely broken.. i was on a 20 hour crunch on last day and just decided it is what it is when i saw it.. all the enemies were considered bosses and they inflate you score by 5% LOL. the couple of days i took it slow (very slow) came back to bite me. but sometimes thats how it be.
but on the other hand its pretty funny that the score run is just getting a good cancel for score and then genocide route with infinite bombs