hey.. i play GS and so far i tried your concern.. i tested inca+2tg+1skel worker and 1inca+3TG... the result is inca+2tg+1skel worker does a bit more damage than inca+3TG. some pro peps says that if you use 3TGs, the 3rd TG has a diminishing effect. idk how it works thats why i conducted an experiment and have my answers.