No, none of my 'opinion' is based on heresay actually. I had the opportunity to test out a Polaris while I was in Atlanta last, even open it up and see what makes it tick (Im in EE, so Im not just looking at a bunch of wires and boards). And to add to that, I have a meter... an actual PAR meter, not a lux meter.
The luxeons specs are well known among those here and over at nano-reef.com... where a few of us have made lighting systems based on them prior to the PFO release. I also frequent the LED forums, and keep up on LED technology, so my numbers on efficieny are not opinion, but the actual lumen/watt efficiency ratings published by the mfg's and independent test sources.
Here, check out this DIY system by Zachtos that uses the same luxeon stars that the PFO uses...
http://www.reefcentral.com/forums/showthread.php?s=&threadid=727139&perpage=25&pagenumber=9
His final results, with 24 of the luxeons @3 watts each, was less output than his previous 26 watts of PC! OUCH!
Even before your test results, I had Dana's to go by...
http://www.advancedaquarist.com/2006/8/review2
Not impressed by either FWIW. Narrow spectrum, narrow focus/spread, poor output/watt efficiency, in comparison to T5s or MH... its not opinion, its fact.
I have been contacted by 3 people now looking to 'boost' their PFO systems with other lights. My suggestion has been to treat the LED's like halides, and to add rows of T5s to improve the output/spread of the LEDs. One guy who did it (or else he was going to can the PFO LEDs all together) got the best results when he added 4 rows of T5s to his solaris. It saved his light-loving corals that were bleaching out from lack of light, and actually turned the LED's into suppliments for the T5s.
The only opinions that I might base my opinion of LED's on are those impressions of Sanjay Joshi who has been testing out a PFO unit for a while now over one of his smaller tanks. I would consider his opinion of some value though.
As for the %age of PUR vs PAR between halides and LEDs... it depends on the coral. Some corals need more green, some need more yellow/red. So to say that the PUR of the LEDs is better is not 100% correct. Since then, Dana has done more pigment research and blue light is not the only light needed. PFO has had to add green LEDs to their 20,000K units to prevent the overly monochromatic light from making corals lose their colors. I would speculate that much light the bulb-husbandry issues that T5 owners must be aware of, LED owners will have to be aware of as well... and the eventual addition of yellower/red LEDs will happen at some point Im sure. Since you have the pheonix, you should be aware of what an overly monochromatic bulb output can result in... pheonix bulbs look great, but their large blue spike with little of anything else output wise can really wash out the coral pigments in a tank. LED's arent very different. There is such a thing as 'too much blue'. I have a buddy who used to run his 150g with nothing but Radiums, and suppliment them with VHO actinics on top of that! The tank, and its corals were all blue even if they werent supposed to be. When I finally convinced him to try 14,000K Ushios with blue+ T5s instead, the corals came alive despite the lower output (switched from 400s to 250s)... due to the wider spectrum. There is such a thing as too much blue and not much else being bad.
This goes back to spectrum which again seems to be rather well balanced according to Riddle. 
