I think he is using the stuned/disorinted numbers. I get with 2k ap and 600 sp and using
http://static.mmo-champion.com/mmoc/...ldestroyer.jpg with 6% in 2h specialization.
(507 x 1.06) x .3 + 2000 x .36 + 600 x .58 =1229 x2 (stun) x 2 crit = 4880
(761 x 1.06) x .3 + 2000 x .36 + 600 x .58 =1310 x2 x 2 = 5239
Theory craft with only 2000k ap at 80 is probably way low and I don't know if the weapon damage is accounted for after AP or before. If after AP then the numbers would look like this again a 80 would have a higher AP I think.
992 x 1.06 x .3 +2000 x .36 + 600 x .58 = 1383 x 2 x 2 = 5534
1246 x 1.06 x .3 + 2000 x .36 +600 x .58 = 1464 x2 x2 = 5857