Two Question Thanks.

1. Try avoiding using dragonite.

Dragonite only surives longer than tyranitar in the PC/FB set up. C/FB: tyranitar survies 35s, dragonite 25s.

Tyranitar survies longer in all set ups except FC/FB, even C/FB due to resisting confusion. It has also higher DPS in all set ups.

Confusion is ALOT more damaging to your game than FB.

This also goes for Gyarados, survies Confusion for about30s

If it has FB you will probably be not selected any tyranitars but you won't know if it has PC or C.

Imo:
Just go with your regular team of tyranitars. If you are low on people and might faint all 6 put an anchor in the back. Blissey outperforms dragonite in this role and should give you a solid 60-75s extra.

In general tyranitar outperforms dragonite in all upcoming tier 5 raids. It dragon-movesets equals a medicore DPS rate and its dragon/flying-typing doesn't protect it from any raid bosses except machamp.

You should be very conservative powering dragonites for the purpose of raiding.

IMO:
Dragonite:
A+ gym attack
B+ gym defend
C+ raid

Tyranitar:
A gym attack
B gym defend
A+ raid

Doesnt matter what pokemon you put (with exception of lugia), mewtwo confusion/fb one shot every pokemon I had. I did ex raid today, pokemon maxed out level 39.5