Panama vs Google

What is most likely ratio

[ffctas]

Soon, with similar ad placement algorithms, what should one expect cost per campaign as a ratio of Yahoo to Google. I am assuming equal competition and equal ad quality on each network.
For example, should you expect Google 80% and Yahoo 20%. What are others thoughts!

[ScottG13]

I expect my Yahoo spend to be 10% to 20% of my Google spend and MSN spend to be 50% of my Yahoo spend.

Tends to work out over dozens of product areas.

[UnitedRigo]

I spend:

68% Google
25% Yahoo
6% MSN