Reason 1: False, Deadly Saber + Rupture with Beserk up and Hungering Talent, also Payback talent
Reason 2: False, Force grip, Intimidating roar, sprint + charge, talented Ravage/Deadly throw/Charge
Reason 3: False, It is a simple priority system, keep primary abilities on CD depending on spec, for Annihilation (our best spec imo), its Deadly Saber > Rupture > Annihilate > Scream/Ravage 2 hit cancel
Reason 4: False, probably the largest false, with Annihilate hitting anywhere from 4.5 - 5.5k and a trinket/adrenal pop of beserk and full dots, Deadly saber ticks for close to 1800 on 3 stack and rupture close to 800. Our sustained damage is insane, and we can burst if needed. I literally drop someone from 100% to 0% in 5 seconds at 1:13 in my new video, trust me, we have damage output.
Reason 5: False, you are just wrong here, ravage does two immediate hits then you cancel the third if you are smart.
Reason 6: True they dont work in PvP, but other classes have incapcitate hits that are not allowed in PvP as well, not to mention we do not need them.
Sorry, but I think you just need to practice more as a marauder. Try this spec:
http://www.torhead.com/skill-calc#100bIrRbRbfGzZhMZh.1