Aye, he must have been in league with the Dark Gods. Getting so high with Sisters requires inhuman skill, impossible luck and brilliant army match-ups.
Necrons is the smart choice to counter the Taudar spam, but I have not the money, time or desperation to buy such an army purely for the metagame.
Don't get me wrong Marines will be the largest showing, but they will be one of the lowest showing in the Top 40 where it actually matters. In the Top 40k Taudar will be the largest.
To take Rhino borne Sisters against Taudar is an exercise in masochism, one I reserved for the Final last year.
I will be taking the Sword of Cynicism (cool sounding Chapter name) as additional luggage.