Grab a NA Beer,
go to that favorite chair,
and read until your inner geek is mellow.....

http://dastern.torque.net/techdocs/nonlamp/982674.pdf

sample quote

After evaluating the robustness of Chrysler’s current ATF, it became apparent that virtually every aspect of the fluid would require an upgrade to provide "fill-for-life" performance. Therefore, the goal of the project was to develop the new ATF with shift quality equivalent to that of the current fluid but with
improved viscosity retention,
thermal oxidation stability,
low temperature viscosity properties
friction
and anti-shudder durability.
...snip...
To further demonstrate the enhanced oxidation stability of the new Factory Fill Fluid,
ATFs A, B and three other ATFs were evaluated in an extended test...
...snip...
The results of this evaluation are shown in Figures 5 and 6.
ATF C is the General Motors DEXRON-III Reference.
ATF D is MERCON-V.
ATF E is the Chrysler MOPAR ATF+ Type 7176 from 1993.
end quote

Figure 9 and Table 10 on friction values in Overdrive Clutch and Torque Converter performance
deserves more than a quick look