The link you posted sums up my main concern with these fixtures. Check out the "More about emitters" portion of the LED section of the link. Here are a few quotes:
"...not all emitters are equal..."
"Worse would be the cheaper no name emitters used by manufacturers such as BaiSheng & others and sold under a plethora of other names for so-called aquarium use; these use daylight emitters that can vary from 2000K to 6500K and are in reality totally useless for aquarium use other than just plain light!"
"There is a reason many LED knock offs utilize 100 plus emitters (often 1 watt each although the SkyLED is ONLY .06 watt per low PUR output emitter). These older technology LEDs use a shotgun approach to achieving aquarium lighting (similar in principle to my use of a dozen low end T12 fluorescent light tubes 30 years ago to achieve adequate lighting)."
I'm not sure if your fixtures are "good" or "bad"... that's why people want to see some data on them. Without that information I tend to stick to the "if sounds too good to be true" adage.
Tom