chris is right. stronger does equal bigger, your muscles get bigger by getting stronger. not by getting weaker. but as usual confusing this with 'x person will automatically be bigger than y because he is stronger' which is not the case of course. all bodybuilders regardless of whether smaller one is stonger or not, got stronger when they got bigger. when kevin levrone shrinks down to his 150lb or whatever size it is, he gets weaker, not stronger and doesn't keep any of that strength. no coincidence he also is a hell of a lot smaller. when he gets bigger, HE gets stronger. not the turd who can deadlift 500lb at 140lb, but Kevin himself .. just like eating more calories than you take in will lead to weight gain but this doen't mean there aren't people who can eat junk food all day and not get fat. same thing and all relative to someone else. and to look like a bodybuilder you must train like one so of course it's not enough just to be strong. otherwise everyone who could lift the most would look the best. but if u want to be a big bodybuilder, then yes you must get stronger, while training like one. i cant recall anyone looking ripped to shredds ie stage ready by doing 900lb deadlifts once a month. Can you?
hope this helps you!