In my opinion, the changes relating to pvp, which occur in patch 5.3 are a mistake (most of them).
If a player does not understand that he needs to equip for pvp to play pvp, then he is not a player psychologically ready to play pvp.
If a player feels "scared" to fight against other players because his armor is weaker he is not a pvp player.
If a player doesn't understand that pvp is for those who enjoy pvp and he needs to work a bit to get his goals, then he shouldn't start playing pvp.
Pvp is similar entering the military with a lower rank and go climbing until you reach the top. Nobody joins the army as colonel or general, the guy has to deserve the promotion.
What Blizzard is trying to implement (equating pvp and pve gear) can ruin the fun and the feel of promotion that exists in pvp.
In vanilla the pvp was always full of players ... changes were happening, always "to improve gameplay", but what we see is a steady decline. Because of all these changes, today the pvp is boring ... everyone can heal, everyone has similar CCs, classes have lost their identity, which made them unique. Blizzard should do serious research with the existing players to find out what the players want to do ... and not change things based on the egocentric delusions of some developers who probably do not play WOW and do not listen the community.
This is my opinion.