what are the benefits of an titleist mb/cb over an ap2

I went from Mizzy MP32's to AP2's courtsey of GM ..

Total change , ie now stiff shafts ,1/2 inch longer . 2 degrees flat etc ... up til Tuesday i have been playing good golf .
2 x 13 hole comps under par (placing)
3 from 3 matchplay wins ,
76 gross in a gale to win gross in first qualifier of the year .

Wont mention Tuesday as it was off the tee that killed me ..

I feel ive lost a few yards on each club but im hitting it well , the Only thing i notice negative is i can see too much of the the back of the 3& 4 irons at address , will stick with it for a bit yet but would be tempted to put the Mizzy 3&4 back in . dont have or use hybrids or rescues