Necro's: Tap Tanking?

[Splorf22]

I did a set of AC tests on Loraen (and Sakuragi). I was really surprised to find:

"AC: 1053 Max: 140 (10.0%) Min: 32 (15.7%) Avg: 79. AvgDI: 80. PredDI: 86. Z: 0.43 ATK: 1857"
"AC: 1016 Max: 140 (8.0%) Min: 32 (22.7%) Avg: 76. AvgDI: 84. PredDI: 86. Z: 0.41 ATK: 1725"
"AC: 960 Max: 140 (12.1%) Min: 32 (18.2%) Avg: 83. AvgDI: 86. PredDI: 86. Z: 0.47 ATK: 1807"
"AC: 874 Max: 140 (24.7%) Min: 32 (8.6%) Avg: 91. AvgDI: 81. PredDI: 86. Z: 0.55 ATK: 1944"
"AC: 680 Max: 140 (19.6%) Min: 32 (7.8%) Avg: 89. AvgDI: 81. PredDI: 86. Z: 0.52 ATK: 1427"
"AC: 593 Max: 140 (20.5%) Min: 32 (9.4%) Avg: 93. AvgDI: 87. PredDI: 86. Z: 0.56 ATK: 1360"
"AC: 702 Max: 140 (18.8%) Min: 32 (14.1%) Avg: 87. AvgDI: 84. PredDI: 86. Z: 0.51 ATK: 1443"
"AC: 515 Max: 140 (23.3%) Min: 32 (10.3%) Avg: 93. AvgDI: 86. PredDI: 86. Z: 0.57 ATK: 1184"

The first 4 are Sakuragi and the second 4 are Loraen. So when fully geared on Loraen I was getting hit for 87-89 damage on average; on Sakuragi 76-79 . . which is only about a 15% difference (of course Sakuragi has almost twice as many HP when fully buffed, has more avoidance, and has more 'defensive' disciplines like riposte' but still. It's not THAT much).

In practice I have killed L54 mobs solo by slowing, meleeing with the RoA/animation, and using Bedlam to heal.