The BM doesn't sound like your standard TS9, compared to the TO800 (as I could compare them both on my rig) the BM gots far more balls, is tighter, far more volume (BIG clean boost) and the tone pot reaction is totaly different(the BM tone at 0 correspond to the TO800 at 3 or 4. The BM is VERY bright).
They are both OD, both TS9/808 based, but they are totaly different
I'd say the BM is totaly geared toward highgain amp boosting more than the traditional blues OD, even if it can be used like that with the tone on 0-3.