Hello Danio, welcome to the .Org and to EB .

I am afraid you cannot combine the benefits of multiple mods in this way: they simply overwrite one another's files. It's been a while since I last installed formation mods, but my guess is you are now using MC's player formations and Sinuhet's A.I. formations (unless Sinuhet also included a player formation file in his mod, in which case you are using that as well).

Sinuhet and Darth improve A.I. battlefield tactics by tuning the field formations the A.I. uses (they may also have fiddled with the player formations). MC simply changed the pre-set formations the player can use. I don't recall there being a big difference between Sinuhet's and Darth's formations. Both made the A.I. a bit smarter on the battlefield, but that's it.