the way a beat is mixed is always a factor in the voting, its a technical factor and all these factors should be taken into consideration when voting, a good or bad mix can be the deciding factor between two beats that there is nothing else to decide between them.yeah but these ain't commercially released tracks.
I feel it's a bit harsh judging some people on mixing and mastering capability, as it's a beat battle, not a mixing & mastering critique.
Even mix and master engineers revere and respect eachother because they're different disciplines.Even further from that is beat making/composition.
So like i said, if your beat is dope, it's dope - i don't care if your reverb is 0.5db too loud.
Ultimately in the real world in practice, people know what they like and they will vote for that, a lot of the technical stuff can be forgotten. If its that dope its that dope.