I am pretty sure that SE wants all 3 tanks to be as balanced as possible, while also feeling different in playstyle, and bringing different things to the table.

To all the people who are making wild claims as to which tanks are best, and nerf this and that is OP and this ability is useless, DRK is useless, ect ect ect

Take a step back, give it a week or two and lets see how everything plays out.
Theorycraft is great, but it doesn't mean much without data.

Thanks