As part of their inherent power, tankers get a buff that works similar to Boost Range, but it boosts Radius and Arc of powers. The arc of Cones gets boosted by +100% and the radius of PBAoEs are boosted by +100%.
This means a 90 degree cone will actually cover a 180 area, while a 10ft PBAoE will cover 20ft.
Any power that has more than 90 degree cone, or more than 10ft radius, is immune to this buff.
Reading through every post in this thread has been a bit time consuming. Thank you everyone for the feedback, it had been useful.
Ill get into more details at some point tomorrow but a few changes are going to be made in the next parch. A few highlights, just to keep the thread from over focusing on those points, is that the +radius on Spheres will be lowered to +60% (cone arcs will remain as they stand,) this means 8ft radius goes up to 12.8, 10ft goes up to 16ft.