OP HERE ON MY ROGUE
So decided to play Rogue while waiting for reply, but I think I came up with an answer on my own by simply “experiencing the difference”.
Comparing Feral Druid and Rogue, I noticed that Rogue just feels more equipped for PvP combat.
With Rogue I can take on 2-3 people at the same time because of it’s CC utility, which I didn’t think would be possible.
I Sap one, Blind another, and then kill the third in a Cheap Shot + Kindey Shot stun lock. Then Gouge the 2nd player, and repeat the stun lock on the third… It feels quite awesome when you pull off some crazy stun kills. 
However with Feral it has been more of a… I think the best word I have is “support Rogue”… Basically you DO have Rogue gameplay, but a lot of the stun based CC is taken away in favor of healing/dispelling/roots abilities, which are more support focused.
I guess I have just been too accustomed to Druids amazing self-healing abilities, to see how a Rogue could possibly beat a Feral. 
Not to mention that I noticed how much damage is being prevented through Rogue CC alone, which makes up for the healing.
I heard the phrase “Feral is a discount Rogue” somewhere, and after giving Rogue a go I can really see what people mean by that.
Essentially, Feral has a wide range of utility for a wide range of purposes, but Rogue utility is EXTREMELY targeted towards killing players. Which is why Feral feels 1000% better to use in open world content/PvE, since they just don’t die with their self-healing, while Rogue feels horrible against stronger PvE rares on their own. So It’s a give and take. 
I have always geared my characters with the purpose of playing PvP through BGs or WPvP, and while Ferals can be argued better for WPvP because of their healing, I still think Rogue is the better choice here.