I have to go with, if done right they should produce similar effects. I do not squat, have seen too many people get injured right before football season. I have gotten up to 600 on my third 10 rep set, and couldn't walk the next day. I added almost three inches when I switched, but I will admit my form and weight wasn't very good doing squats. I always do leg presses, then leg curls and extensions, with a calf exercise, and my legs are done.