"well, hell, ya can't argue with that logic. There ya go, just focus on making your bench as strong as possible, and ignore everything else. That'll give ya the body every bodybuilder dreams of.
There's a difference between powerlifting and bodybuilding, crackpot69. Sure there's huge overlap. But the question was is it possible to have big muscles without super strength. The answer is yes.
Now do you have anything intelligent to say, or will you stick with those two letters you've mastered so effectively?"
You asked for it. Yes, there are differences between mass and strength routines, but it has nothing to do with focusing on the muscle being worked: "Train movements not muscles". Here are the differences between mass training and strength training:
More mass DOES = strength because a larger muscle will have more actin and myosin filaments which cross-bridge and cause the muscle to contract (if activated). More strength doesn't necessarily equal more muscle because other factors do contribute, though.
Training for strength and mass should be different because strength is primarily neural. You train the nervous system for strength optimization with heavy weight/low rep training. You would also want to wait a while between sets (3-5 minutes) as to let ATP replenish to 100% and allow enough time for lactic acid to clear.
Training for hypertrophy requires more than one rep range to stimulate the various ways a muscle can grow. You need low rep (3-7)/heavy weight/explosive contraction training to stimulate myofibrillar growth of the IIB's and fibers, and high rep (10-20)/medium weight/slow contraction to stimulate sarcoplasmic growth of the IIB's and myofibrillar IIA's and of the I's.
Another thing is that muscle growth training should involve a greater variety of exercises to recruit more/different motor units and consequently more muscle fibers will be stimulated and with nutritional support - more growth.
Strength training is better suited for a small number of exercises because strength is very specific. You want to optimize your nervous system in each specific movement (squat, dead, bench) and pretty much ignore any additional work except assistance work where needed.