Resilience is different
Resilience no longer reduces critical strike chance but instead only reduces damage across the board. As resilience is the premier PvP stat, this impacts gameplay in a major way. First, critical strikes are back on the table. This means that talents contributing to crit are valuable in PvP again. Burst damage from crits will happen more often, and players can opt to stack crit for PvP without it being devalued ... much.