SNS achieved 2 notable marks,
1. He was the second guy to document on the Internet a complete front to back LED grow. He was the first to do it with a commerical LED unit.
2. He was the first to achieve a comparable yield on a per plant only basis with HIDs. Each of his plants produced an amount comparable to a plant grown under
HID.
No one has yet documented a growth where LEDs have reached a total crop yield of .5 gram/watt/month which is the benchmark for a competent HID grower. Best as been slightly over .3 gram/watt/month by a Dutch guy.

So at this time, there is no evidence that LEDs can outperform HIDs.

The commericial units have to make a bunch of compromises in order for them to be a viable commercial venture. I think the guys making the stuff at home are going to hit the .5 g/w/m mark first.