Rampant has no flow. Like, at all. His verses could have been a remix of samples of him taken from commercials. Monotone diss is decent but that's really all you've got going for you.
Blest's flow is alright, at times he speeds up and slows down at odd moments but certainly does better than Rampant. It's a little strange when he ends a bar with the same pitch rather than deepening his voice to verbally punctuate his sentence. Content-wise he keeps a steady hail of blows coming. Suicide line is nice, but the second verse is a little sluggish. 'Editing his voice' is a really strong diss.
Vote goes to Blest, easily.