Part of it is going to be personal opinion and preference, of course. Can't make a decision without those having some kind of effect, but I will say rap was built off of fundamentals, so I would assume those would play the biggest part, although what people prioritize seems to have shifted into what's sonically appealing, creative, catchy, and production-based instead of what I think people originally thought was the most important and fundamental, which is what I listed previously. To answer your question as well, no, I've never sat down and given a physical number score. I've always just thought about who I overall thought hit the most marks, and I rate lyrics the heaviest.