Both SF and DF can trigger a lot of muscle growth, but the growth won't happen unless you have caloric excess. If you don't eat enough, you won't gain mass whatever you do.
SF and DF serve to stimulate growth at different points in your lifting career. If you haven't been lifting for long, or you've been working out ineffectively for 4 years, you'll probably make quicker progress on the SF. If you've been working out effectively (meaning you've been consistently getting stronger) over the past 4 years, you'll probably make quicker progress on the DF. So the question you should really be asking is "which is more applicable to me at this point in time?"
It's not about SF vs DF, it's about you. Hence BW's question.