I did some archery damage testing with Zlotz in NA3 to help him pick a new build. I was his target, and my build has 18 str, 4 IF. We stood still roughly 15m apart (not sure if range has any impact on damage, I suspect not) and he shot me in the torso only. His arrows were always in a tight cluster, so he was most likely always hitting the same hitbox. He was testing a 21-24 build with maxed PD and WM, and he used +3 bodkins and +3 long bow (or maybe a +3 rus bow... I forget). We ran the test twice, the difference being him having 7 IF or 0 IF. His gear was light, so the impact on wpf was minimal, and it didn't actually change the results on my end much at all, it only allowed him to aim the slightest bit better since he had maybe 5-10 more wpf when he had maxed IF.
My gear:
Test 1) +3 light kuyak, +3 wisby gauntlets, body armor total: 57
Test 2) +3 rus scale armor, +3 wisby gauntlets, body armor total: 64
Test 3) +3 leather ranger armor, +3 leather gloves, body armor total: 35
Results:
1) It took a total of 4 arrows to kill me. I had only a tiny sliver of health left after the 3rd arrow.
2) Once again it took 4 arrows to kill me. I had much more health after the 3rd arrow this time around, yet each arrow did the slightest bit over a quarter of my health, so 4 arrows was still all it took to do me in.
3) It took 3 arrows to kill me, but I had at most 1/10 of my health left after the 2nd arrow hit me.
It doesn't seem all that different than pre-patch for me. Before the patch I had 2 more IF, and in battle I noticeably take more damage from archers. I get the "stunned" animation almost 40-50% of the time now, as opposed to almost only on headshots. That said, I also have 1 more athletics and 3 more agi than before, so maybe I am simply running straight into arrows at higher speeds... doubtful, but still possible.
Unless wpf gives a huge buff to archery damage, I think all of you 10 PD guys are grossly over-exaggerating the damage nerf, since someone with 7 PD can seemingly do just as much damage as, if not more than, someone who had 6 PD before.
Although yes, I am nothing but an agi my old friend who typically uses light-er armor, hopefully this helps give some perspective.