Burps

Hello all... I am quite new to this site, although i have been following some threads for quite some while now.

As I play my SP for quite some time now and moving deeper and deeper in the more difficult instances, we landed now at the T6 instances. My gear is quite ok for that level and my fellow SP`s mateys from the guild have the same or just a tick better gear level.

As her gear is greater part items with haste (around 120) and 1260-1280 +dmg unbuffed, my gear is raw +dmg 1320-1340 unbuffed depending if i need stam or not. She is really convinced from the haste gear (as of 1400 buffed 1dmg=1haste principal), while I am skeptical still on some specific fights. The principal of haste, to put it crude, is packing as many MF between your cooldowns to improve your dps. (where she begs to differ, as it is a benefit for all spells... indeed it is, but in the end everything does the same dmg, except for the MF increase). I have read lately quite some threads on various sides about stacking haste, what is the benefit etc. and I am convinced on static targets (as many bosses are) haste is definetely the better alternative in our gear league. However, we are raiding MH lately a lot and there my skeptism comes back with a vengeance. Looking at WWS stats we always come to the conclusion that I always top her in dps on the trash waves (she has a bit of extra latency there, but not enough to prove my wrong) and she kicks my dps butt on the bosses. These differences can be actually quite high. As I understand, my gear is for bosses definetly worse as hers, due to the haste. On the trash we use both priority of just Dotting as many mobs, using MB, SWD when on CD. Both we hardly clip dots. My theory is that in this case, my raw damage makes the difference. As haste will only benefit you, when you have the possibility to squeeze in extra MF, which we both hardly do during trash, due to the many targets who have to be kept dotted.

My question to you guys, has there been some research on multiple targets (5+) in Haste vs +dmg using mainly DOTS and an occasional MB/SWP? Has someone experienced the same or can define an answer to convince her that haste is not always the optimal solution? Or any other feedback that can help me prove if im right or not. Thanks all