In additon ur complete calculation here is complete bogus when it comes to pvp and I dont even wanna waist time to talk about it.
The problem is that u treat pvp as if it was pve.
PvP is not a dps race and u cant calculate the value of expertice like this.
When u fight in the arena and u want to land a fast stun with
http://wotlk.openwow.com/spell=12809 on a healer then u wont find always the time to run behind the healer just so he cant dodge.
I rather have a 0,75% reduced chance that my abilitys gonna be parried or dodged than 48 haste which increase my auto attack speed by 1.46%.
1.46% increased auto attack speed gives u nothing but a minor increase of ur sustain dmg. The fact that u have in pvp only a short up time on the enemy makes a increased auto attack speed even more useless.
0,75% reduced chance that the enemy parry or dodge a important ability can be a game changer in arena.
1,46% improved auto attack speed does nothing.
Therefore 24 exp rating > 34 haste