Vocal driven rap has weak vocals and no mix.
To the reviewer below - what it's missing is enthusiasm.
This is probably freestyle, which means he's making it up on the spot. It takes skill, and a lot of practice. The artist needs to work on his articulation and get rid of the deadspace. He also needs a second artist to go back and turn the backing track from a simple loop to an actual building track. Those two things, plus some enthusiasm, would make the difference between a 4 and an 8 in my opinion.
good but, it needz somethin'... I can't tell wat..
And btw.. yo mic is 2 loud