Ha ha, yeah, but a Brough was a beautiful charismatic British sports bike of the era that most people (with the noticeable exception of TE Lawrence, some "well heeled" English gentry and several American movie stars) couldn't afford, pretty much like the recent MV Agusta's.
Whereas a CB650 is a lot more comparable to the BSA M20. Reliable old banger, (I've got one) but nothing really special.................