Recently a blue post was made on the Community Council speaking about the gearing issue. Here is part of what Blizzard Entertainment had to say,
We believe that the current arrangement – using PvP item level – has reduced the power gaps between players to reasonable amounts that make for fulfilling games where your team usually has a good chance to defeat your opponents in Arenas and Battlegrounds. You can get started quickly, and perform adequately
I never subscribed to the idea that our developers never played their own video game. But I cannot offer any other explanation for this level of ignorance. 105 upgrades to still be 26 item levels below competitive is not in any way adequate, Desvin.
Who are you trying to convince, Desvin?
Desvin, do you know you guys tried Item Level Upgrading in Mists of Pandaria in PvP & had to revoke it the next major content patch? Why do we have to deal with the same problems over & over again? This time, however, we are dealing with the issue for an entirety of an expansion.
Link to Community Council post: PvP Gearing in SL - #8 by Desvin-1200