If you intend to post again, find your shift key and learn to properly format your post to be readable, rather than a huge wall of text.
my guild runs with 2 well geared TG warriors, myself (lilhoss) and tectavious. Both of us are similarly geared but tect has the upperhand. There are many encounters in naxx, most of which we are 1,2 in damage. sometimes he wins, sometimes i do. it is at this point in gearing that i have found that it just doesnt matter. yes, havinng betrayerX2 is gonna boost you a lot, but for the most part RNGers take over. on Thaddius last night, he beat me by 10,000 damage over a 4-5min fight. on that fight, it comes down to him having 1 execute crit for 20k+ and me w/ a 10k execute non-crit. having 20ap and 0.2% crit more than me just doesnt matter. who cares if he uses ravinous waist and i use girdle of chivaly? everything looks good on spreadsheets, but that is ONLY THEORY! this game is all about luck. gear raises the MINIMUM damage you can do, but if you are unlucky with the random number generator and your buddy gets lucky, it doesnt matter. yes, making sure you hit your rotation right is skill, but once you master that, its all luck. you get a white crit, you get more rage. if you are unlucky you get less rage. that might affect your HS spamming. you get a streak of 5 crits, you get rage, but then you have a 5streak of non crits and OOOh, no flurry so your HSs are slower. thats what hurts. IN THEORY, having a 33% chance to crit should keep flurry up all the time, but we all know better from experience.
the bottom line is that we can discuss what gear is better in what slot all day long, but in the end it all comes down to luck against the RNG. YES, gear can up your chances of getting lucky, but that only goes so far. at the gear lvls we have from farming naxx, swapping out one belt or bracer for another isnt going to make a difference (given you dont go below hit cap).