The thing I didn't like about archers advantage is that it doesn't take into consideration things like string silencers, peeps, d-loops and some other stuff. You may very well be right in your assessment but if what I have learned is correct, once you start adding weigh to the string then you will impact the FPS.

When I entered everything for my setup into OT and then checked the FPS with a chrono it was very close. Also, archers advantage showed me being on the weak side of optimum and OT showed me being on the stiff side of optimum and paper tuning indicated that I was on the stiff side. It may be because I spent more time with OT than AA but for me, and my results, OT was closer to what was really happening with my setup.

This is not a slam against AA, for all I know my use of OT could be wrong, but it is just what I found when I compared the actual end result to the computed results.

EDIT: In looking around I found the spot for the dloop in AA. I was wrong about that item.