This mostly agrees with my own experience growing up and doing various types of weight training for various sports. However, I'd say the very biggest thing tha

This mostly agrees with my own experience growing up and doing various types of weight training for various sports. However, I'd say the very biggest thing that determines whether your weight-training leads to a big bulky physique or a lean and cut one isn't the number of reps you do. It's diet. If you eat large meals, you'll be big; if you don't, you'll be lean. It may not be possible to get "huge" without using relatively heavy weights or your body weight, but a lot of people I've known have a ridiculous fear that they'll somehow accidentally develop the kind of physique that professional bodybuilders get after spending thousands of hours in the gym and taking anabolic steroids. It's also worth pointing out that some very lean people are shockingly strong. One guy at my school weighed about 160lbs, looked nothing like a bodybuilder and could bench 350lbs with ease.