Best TF Defender Other Than Rad For AVs

This isn't the case. Damage buffs do not multiply a character's enhanced damage totals, it adds to them and combines into the total which multiplies base damage.

Example: 100 damage power * (100% base + 95% damage enhancement + 120% damage buffing) = 315% of the power's base damage, which would be 315 damage. Without the damage buff it would have been 195 damage.

The 400% damage cap that most archetypes have includes the bonus from damage enhancements and ALSO includes the base 100% that characters always have. That means if all of your powers are enhanced for 95% damage, then any damage buffing past 205% doesn't do anything for you.

The end result is that buffing people up to their damage cap will only be doubling the damage of many characters, which is equivalent to 100% -res. The people with higher caps will have their damage increased by about 2.5x, which is equivalent to 150% -res.

Which is why I'm saying it isn't merely additive, but I suppose that is a matter of perspective.
I had read somewhere that enhancements factor in against that limit. Guess I haven't been factoring that in, so thanks for that.

FF doesn't even make your list? An AV still has a very small chance to hit against a capped Defense. Of course with FF it means the team has to find other ways to accelerate the fight since debuffs are not in the set.

Thats why it didnt make the list. FF is really a 1 trick pony, and its 1 trick isn't debuffs. Which are what is needed for AVs (most of the time) it also has no +dmg, so it can't make players attack any harder.

Also missed Empathy.

darn lol, but i believe i was focusing on sets which actually had debuff powers

emp is alright because it has +dmg with fort and +end recov in RA, but other than that it doesnt help the team that much because it doesnt debuff

FF i would rank worse than EMP in AV fight because it only does +def

There is more to fort than +dmg, there is more to empathy than heals, fort, and RA. If you have a tank that hits the god mode button, the Adrenaline Boost chaser from an empath can make a big difference.

There is more than defense from Forcefields. Have you ever seen the endurance drain to a team with insulation bubbles in a Katie TF? Did you ever notice how many times the squishies get mezzed by stuns and holds during the ambushes while fighting the Honoree? Have you ever imagined the effect of Detention Field applied to a pylon while the damage dealers were taking another pylon down and the tank was holding aggro from Lord Recluse in the Statesman TF? Did you ever notice Detention Field on the healing nictus while fighting Rommie?

Suddenly, there are more and more situations where a bubbler is very useful. How about the ITFs where massive ambushes can overwhelm the best empath's recharge and endurance? Lady Grey task forces with extra aggro and ambushing is smoothed out by a steady defense level.