Not that it won't grow or do a good job but take them for face value and nothing more. Some real good info listed above and I like where this forums heading. Efficiency
To simplify the above comments a little. Most of us cob users buy cobs that range anywhere from 12-50 dollars each and run them around 50 watts each. They are taking a $.50-2.00 cob and running it 4 times harder. For the price the light is built as cheap as possible and will not last if it's run that hard. If it's claimed to equal a 400w and draws less that's a huge exaggeration too.
Companies like this are actually hurting people more than helping. They are jumping on successful lighting tech and ruining people's experience with the cheapest version of the best thing going.
@Dudeski u know bro anytime.