I cant officially vote ( not enough posts) but here's what I thought:

Flow: Both did a pretty decent job. I'd have to say though, that
B. Mouse flowed a little better. He had good structure, which
helped his shit flow. Also had some multis. Rappin's verse
had alright flow, but I felt that the structure let him
down, cause' a few lines seemed stretched.

Punches/Personals: Rappin' had a few good punches, like the treadmill
line and the first class line, but the rest came
off too weak/played. B,mouse also didn't have that
great of punches. A few lines were played like the
Tyson line and the Terminator line but the first line
I liked. Neither had any personals. All in all
kinnda average for both, but I'd say Rappin'
edged him out slightly by being a bit more creative

Vocab/Creativity: Basic vocab on both parts, creatively speaking
Rappin' took it. Mouse's punches were a little simple
and a few lines were played. Rappin's lines
also seemed a little bland and played, but had a few
that stood out more than Mouse's.

Overall: Not a great battle, but decent. Both had good flow but battles
are won with punches. This is where I felt Rappin' did
slightly better, due to creativity. Both need to use personals
which were absent from this battle. Punches also need work
they were played and didn't hit that hard. Close one but
If I could vote I would have to say Rappin' Master
barely edged him out.