Retaliate does benefit from the DR bypass talent, although I'm not sure if it is just the melee one.
Attack speed is basically the same as -50 recovery = 30-33% attack speed, it delays the next attack. Dexterity affects the actual speed at which attacks are made. And I think that's the only one that does it. It may affect recovery as well.
Two handed swords don't benefit as much from DR penetration as faster weapons do.
Here's a quick test, doing some more. Identical paladins level 1, except one has a dex of 4 vs a dex of 18 using -50 recovery brigandine and maces vanilla. By the time the seventh attack of the dex 18 paladin had landed on the other, the dex 4 paladin had made 5 attacks. No interrupts were counted. 18+24=42% difference in action speed, for a difference of 7/5 attacks with only a few frames of difference in the last attack landing.
For morningstar two handed it's about the same 7.5/5 split in attack numbers. Now it should get interesting with vulnerable attack and various other stuff on...
15 attacks vs 10 attacks morning stars, 18 dex vs 4 dex + vulnerable on.
I got something like 7.5/5 the first time but it was a few frames off so I counted it up to 10 on the right side. 4 dex side interrupted 3 times, so that might be an issue as well affecting overall hits. Now we'll do the reverse with vulnerable attack on the 18 dex side. I'll bump up resolve on both and see if it'll stop the interrupts.
6.5/5 for mace/shield+vulnerable attack vs mace/shield.
Taking a different methodology single weapon attacks are 2.8 seconds vs 5 seconds.
Vulnerable on, it's about 3 seconds per attack vs 5 seconds.
Tentative conclusion is that -20% attack speed hurts people with higher dex or rate of fire builds. Now moving unto armor differences.
Naked 18 dex 4 attacks in 10 seconds (using a better method here by casting a spell on somebody and using that as a time stop watch, my old technique with cipher) using morningstar +vulnerable -20% attack speed. Almost exactly 12 attacks in 30 seconds.
Morningstar in 30 seconds, we got 13 attacks with 18 dex and naked. 8.33% difference in total attacks after 30s between using vulnerable and no vulnerable naked with two handed morning star.
4 dex 9.3 attacks every 30 seconds. With vulnerable on, it's about 8.4 That's a 8.7% difference.
-20% attack speed will probably cripple anybody using fast weapons though, or if their attack speed is buffed to 50%+ like the wizard's alacrity or via potions, while naked.
I changed the methodology on the last few experiments, so will have to redo the brigandine armor sets, although my tentative conclusion is that attack speed debuff/buff matters less if you are already at -50 recovery.
I also tested vulnerable attack with the fire retalation at 50% endurance, and it does penetrate through to people around you if you turn on that modal.
The dexterity or action speed, makes a much more accurate representation of how many attacks you can get per x time. Of course this doesn't factor in the arquebus and arbalest reload times, but dexterity affects reload times as well.
Edited by Ymarsakar, 14 September 2015 - 08:47 PM.