It shouldn't disappear, but silence and squall is a pretty ridiculous ability. It's true power gets displayed when multiple players cast at the same time. I played a control map and 4 enemy players popped the ability at the same time. Their was no map left, the only class that has the same level of map control may be siege breaker with sun spots, but it's much harder to drop them out in a similar area. The roaming nature of the super especially when several are dropped becomes aggravating. I'm not asking for a nerf, because honestly I think all the super abilities should be completely removed from pvp modes except mayhem. I do however think it should be looked at.