Mind your own business, little man. I wasn't talking to you. The concern is completely valid and just an extension of wraitii's point that "AI's might manage" to do the optimization. The relevant people are completely capable of evaluating whether or or not that makes "precious little difference" without your silly posturing.
The sigmoid approach seems ripe for exploitation: 1. Get the game's source code (it's freely available). 2. Hack the game a little to make it optimize resource collection automatically while you do other things. 3. ??? 4. Get a much/vastly better resource collection rate than someone not using this exploit.
No, it's seperate from AO, as far as I understand. It uses the 'specTex' map, but you need to use a material that defines "USE_SELF_LIGHT", as described in the comments here: http://trac.wildfiregames.com/wiki/MaterialFormat
We don't need a delta to determine how big a fraction of each frame is spent in a given API. If profilers show that 0.0001% of the time is spent in a "backwards compatible" API, while 20% of the time is spent in the pathfinder, then the pathfinder is surely a more worthwhile optimization target.
There is nothing to suggest that this is the case. We can relatively easily "predict if a new api/standard will enhance or decrease performance" by using profilers, and seeing where computation time is actually spent, rather than just guessing. The developer in your example could have done the same.