Runes of Magic US / AU

Hi everyone, I am new to the forum, but not to the game, I have been playing for over a year, and all this time I have been playing the tanking role. I currently have a Knight 70, Rogue 55 and I enjoy the tank role very much.

Lately I have been thinking that maybe I could do better as Knight/Warrior but still thinking about it.

My question is, would the strenght boost from the warrior increasing the physical damage as well as generate more aggro over the critical hit rate from the rogue?

Wold the dodge rate from the rogue help to mitigate better the incoming hits over the parry boost that the warrior offers?

Would the use of a 2-H axe with an aggro rune improve the aggro generation over using two weapons with two aggro runes when tanking a single boss?

I know the warrior elite skills 50/50 its a nice taunt.

What comes better when tanking?

Also would like to have a PVP perspective, I know Knights are more of th PVE but I have doing PVP a lot with no problem at all, but what class combo would come better into PVP K/R or K/W?

Thanks in advance.