Well, that wasn't my 'real' fire team. I don't use Andro or Cthugha with them, but for soloing WRag, epecially with an SR team, the extra HP and healing is needed. Despite the loss in damage. None of those SR himes had accessories either. So there's that.
When I'm farming WRags normally, I'm using Arthur + PF and my fire team normally hits for about 60 - 70k damage per unit.
I'd say Acala is worth using though, especially if you don't have any other Fire SSR to replace her.