I don't want to get into this again, but...
I was fortunate enough to try ClieOS's LOD on my Fuze, and yes, there is a noticeable difference. The difference between unamped and amped through HP is minimal. When the Fuze is amped through a LOD, there is a very distinct difference. I don't sell them, and I don't intend to buy one just because I enjoy my Fuze's portability. Charts and numbers may something, but until you experience it, don't discount it.
If you wish to read my review on the LOD, search for Fuze Audition in portable source gear.
I read your review. In it you state that the difference you heard was subtle, not day and night.
I really don't have a problem with that because I was able to hear a "subtle" difference with my Griffin dock.
Anyway, my point has always been that a day and night difference is not possible.