Hi All,
Having operated both systems i.e. Boeing and a B.A. stylee, I belive that as long as the operating proceedure is approved by the "feds", and most importantly, the training is very good, then the guy in the right hand seat is just as able to evaluate the criteria in his or her remit for stopping as the guy in the left seat.
I know that when I changed from the B.A. to Boeing, I felt pretty under- utilised until I moved into the left seat, where I have now developed independently pointing eyeballs (can't spell chamelion!).
There are pro's and con's both ways, but I suppose that as long as the training is good, then they both work and stand the test of critisism.
cheers