It depends what you mean by better results. Exercise makes you better at doing what you're doing.
In terms of muscle bulk, less reps and more weight increases your muscle size more and makes you look bulkier. That doesn't make your muscles necessarily the most powerful though (power, remember, is energy divided by time), since you're just trying to shift max weight and not worrying about speed. The reason I do press-ups is that the activity is fairly fast and thus simulates better the quick arm actions required for Judo.
