lol I tell you what, my first grow started out with a pair of split CFLs (2- 2700K and 2- 6500K) and as the plant got bigger, I literally when crazy adding lights!!! lol I'm not recommending it, but if you had an extra minute and went through my grow from start to finish and just grazed over it for the pictures, you'd see that almost every update I did had another light or something else to help with the light.. I'm extremely happy with the Mars II 400w panel I have, but I think if I am going to get better results, I'd have to either get a much heavier duty LED panel, or switch over to HID, since right now, with the LED/CFL configuration I have now, I'm just about at 400w, but if you do a lumens/PAR comparison, I have a feeling a 400w HID light would out-perform the combination of lights I have.. The biggest problem I'm seeing is the heat that the CFLs throw off, since the LED panel alone dropped my overall tent temperature; however the panel I got is only rated at ~200w, so it's a toss-up.. The price was great at the time (I think I paid $170 for the panel and another $40 for shipping from China), but now I'm getting alerts that the bigger panels that I wanted are only a little more..
Ultimately, if you have great environmental controls, it doesn't matter what lights you put in there, since you can keep it proper no matter the type you use.. In any case though, looks like you have been able to squeeze every bit of light out of that CFL and I'm more than impressed!!!