The distance the bar travels, the path the bar travels, the balance of muscle activation/power, and the primary purpose all vary to the point where they are programmed differently and used differently which, despite what Bazz thinks, allows them to be considered different exercises. Yes technically they are variations but so are box and normal squats, front and normal squats, sumo and conventional deads, but each of these have enough difference in execution and purpose to be considered a wholly different exercises too.