The girl on the cover may have a completey different fulcrum than you. For example, I have a LONG torso, so if I carry the bar too high, I fall forward. I can get around this by leaning over more & carrying the bar lower. If I had a short torso, and strong quads, I'd carry higher, narrow my stance, and sit more upright. Go with the safest way to hit the highest numbers. Everyone has a different set of variables to play with.