TFP with 7 debuffed enemies will be doing around 33.5k damage unmitigated maxed at level 85. This is assuming a crit and 216% critical damage. He also has a base crit chance of 35%. You will need insanely good mods (9% cc secondaries) to get near max crit chance to consistently land tenacity down.
A maxed 85 EP with good cc/cd mods will be critting for around 15-16k @60% crit rate. The TFP set up may have TFP attacking earlier but Chirpatine should have the better overall stamina-damage combination by a fair margin.
Plus, there is no toon overlap if you run the two teams @maraxus suggested. Meaning higher overall damage.
