Pretty hard to call.
Can we see Miss C in a robe carrying a stick or a wand or something?
It really depends. I mean, Saruman commands legions of uruk hai, while MC commands legions of geeks who spend their time surfing the web, so Saruman has a definite edge there in a physical war, but he would have extreme difficulties when the Neatoramanaughts wipe all his hard drives and impose economic sanctions against him (not buying his crappy “I sided with the Dark Lord Sauron and all I got was this lousy Wormtongue” t-shirts).
So I’d say it depends entirely on who got the initiative – if MC attacked Saruman, Saruman would lose all his money and infrastructure, meaning his army would disintegrate, but if Saruman attacked first, MC would find herself quickly overwhelmed.
Cellania would definitely win. When Saruman sent out his Orcs, Cellania would send out a message on Neatorama, asking for a brave bunch of Adventurers who would go and smite Saruman. It would take several groups, but still.
Could she spam his Palantir with LOLcats? That would be annoying.
The promoters.
The actual combatants are only pawns in the corporate machine.
MissCellania. Sassery always wins over depressing evil down-faced arrogant mr-i-know-it-all badassery
There is no contest here. Miss C is only a step away from taking over the entire world. Saruman doesn’t stand a chance.