They utilize large amounts of muscle mass simultaneously and also involve multiple joint movements. (fitnessandpower.com)
And because this is a rowing exercise you can use big weights with a proper form which enables you to build large amounts of muscle mass. (fitnessandpower.com)
I don't have any data to back this up but if I had to guess I would say maybe 0.00001 % of the female population is blessed to have the cocktail of hormones that naturally induce large amounts of muscle mass and fat loss. (grinnelltraining.com)