There is one aspect of Turbo Charging which I touched on in the past, and which may not be given consideration in the grand scheme of things. The faster you charge a battery, the less complete the charge, unless you include a significant after-charge at a "saturation" rate, which would be considerably slower than even a regular charge. The Turbo Charger is a three-stage charging system, so one would hope that the final saturation charge is sufficient to bring the full charge to as close to a typical wall wart charging as possible.
What I would like to see is a real world comparison of a 100% Turbo Charged battery then being used at a steady rate till it reaches let's say 15%, and then compare that to a 100% slow-charged battery and give it the same use to 15%, and let's see which battery actually gives off a longer runtime. I wouldn't be at all surprised to see the trickle charged battery giving a significantly longer runtime, potentially as much as 15% or more, simply due to being able to hold more mAh of its rated capacity.
Perhaps I'll do that test.