Not sure what you mean re: not holding spec on 14500's since TN's published specs on the Neutron 1A seem to be based on 1.5v AAs? In terms of everyday use, (which is the only way I personally have of evaluating the light), the 14500 outputs seems to have a consistent relative % output bump over an Eneloop for each mode....if that addresses your question?
And yeah, I get your point about ratings. You may be correct in that TN actually rates their lights closer to OTF/ANSI standards than some other manufacturers.
Also, since you're considering the Neutron 1A I'd like to advise you that it's a very cool tint probably over 6500k, if that concerns you....and this is purely my opinion, but if it was my money and I had a choice between the Neutron 1A and Archer 1A...I'd go for the Archer because I think it's evolved enough (forward clicky, better output and throw, choice of tints, prob. enhanced driver, etc) make it a more "fully developed" light IMHO.