Nah, it's really not confusing at all, Void. Your PV battery is a 14500, I take it? That mah rating is exaggerated by the manufacturer -- most of them are. That 900 is really about 600. The eGo battery rating appears to be an accurate 600. But, the real story begins after the eGo battery cycles a few dozen times. Everybody that is giving their results are dealing with brand spanking new batts. The results should be good. In fact, they may even get better for a short spell before they start to weaken. Just like us humans, we wear out over time. LOL
We will see - but its not necessarily how it plays. I remember that with the JS batteries, they seemed to be relatively weak at the beginning, then pick up - then die.
But, time will tell - the prototype eGo ive had for a month or so and have recharged a ton of times ( only 300+ mAH ) has worked flawlessly, and has not diminished in capacity!