I have a T5 fed and... pvp is less about fighting and more about which side can maintain unfair powers the longest. Actual fighting is secondary. It's just no fun.
IMO,. they should limit T5 PvP players to just four BOFF powers. One commander, one lt com, one lt, and one ensign. This would ensure that fighting dictates who wins, not who has the most unfair sci powers slotted.
I have to agree T2 is the best PvP. That being said im only in T3 as a Klingon. I was soo happy when I got there. thought of how much more fun I was going to have in a cruiser. But my first 10 or so matches all the Klingons seemed to not no what they're doing. No focus firing, no teaming up. It was crazy. I cant believe that in one tier my fellow Klingons forgot how to play. So to make it easier on myself Ive started playing more after 11pm central US time. It seems feds arent as good late night.