I obviously haven't watched you bowl, but at least in theory, my stats are somewhat similiar to yours, and I have to tell you, I love the World Class, although I must admit that I make fun of it's looks. Old school Blue with Gold lettering-- I call it the Grandpa Ball.
The ball is very consistent, strong and picks up a roll, but be aware that like a lot of LM's stronger stuff, definitely needs oil up front. For me, it hooks up well with end over end rev, too, is nice and clean on the backend, no overeaction on tricky shots. It has also lasted F-O-R-E-V-E-R for me-- 1000 games or more with no resurface, with some loss in reaction, but not as much as other balls I've thrown in the past that had to be retired earlier-- no ball death, and no loss of carry.
I suck, but I am learning and taking lessons. I shot a 246 with semi-fried heads after league tonight with the WC. My high game, a 277, was with this ball, including some blind luck on some shots carrying too close to the nose, wallshots, etc. The ball straight out out-carries anything I've ever thrown.
I haven't thrown the B-R-B, but I'm sure it's a great ball, heck, for my money, everything I've ever thrown by Legends/LM has been great. Are you looking for an angular reaction or smooth consistent roll? How much oil does the ball need to handle? That's what I would ask myself.
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Just call me the rifleman... but god help any innocent bystanders!
Anybody got any finesse for sale?