I think some of you could use this
Weightlifter- A lifter competing in 2 lifts, snatch, and clean and jerk. These lifters compete in the highest weight in a single rep of each movement, then both highest attempts are added up for a "total". The lifter with the highest "total" is the best weightlifter. (Olympics) -also these lifts are highly technical, more emphasis on technique here
Powerlifter- A lifter competing in 3 lifts...squat, bench, deadlift. Also trying to achieve maximum weight in a single rep of each lift. These 3 lifts added together give a total, highest total is the strongest powerlifter. -these lifts are still technical when at a high level, but much less than a weightlifer---more strength is involved here, griding out a heavy weight.
Strongman- Random lifting events usually involving full body strength and endurance. Can be deadlifts, squats, truck pulls, carrying heavy stuff in general. (This is what you have seen on espn and such) -mostly endurance and strength
These 3 types are strength athletes, and they train appropriately to their sport, and they all train entirely differently. They do not train do have ripped abs, or big guns--they train to better themselves in the sport! Therefore its silly to say one or the other is not the best at MMA, or anything else. Its like saying a golfer isn't the best at rugby--they are 2 different things.
Then you have...
Bodybuilder- one who lifts weights for the sole reason of a desired look, with little to no emphasis on strength, or endurance. These are the all show no go guys--but they can always mix in some of the above strength sports, but again that's not whats going to win the competition. They are judged on looks-symmetry, size, and condition.
Gym rat- everyone else. Mostly lifting for looks, but do not compete, in the gym doing their own thing. Usually these are the guys you see making little to no progress year in year out. THIS is what you guys are mostly talking about. Of course these guys have little functional strength---they are not strong, they have not hit a PR or gained a quarter pound in 12 years!