Looking good still GMan, was the COB sold as a 100w? If it was the 55w draw is about right, my 400w draws 210w.
Grow leds are powered at around 50-60% of their max to increase lifespan of the bulbs.
I tend to use it as a rough guide when checking out different brands, if the lights are powered lower than the % above it usually means that the manufacturer has skimped on heatsinks/fans/drivers or all three.
I can't remember which company it was, I was looking at their big advert saying how great their new 5w panels were but when I checked the details they were only powered at 28% so their 500w panel was only drawing 140w so I can only presume they had chocolate heatsinks!