Joe, There are a few probs with the question..
1. I dont think many people are ranked for one keyword in both yahoo and google...... so judging one vs. the other would be hard.
2. I dont think people are going to give you numbers, not becuase they are being secret, but because they dont count them... I have a number of top 5 listings on Google, but I couldnt tell you what the listing sends me numbers wise... I am just glad to have it
You can compare results.. but it wont tell you numbers...
http://www.googleguy.de/google-yahoo...tonName=Search
and
http://www.langreiter.com/exec/yahoo...ml?q=free+porn
On deep page surfers... yes surfers do get to the 3rd,4th, etc pages... but it would normally be for specific and niche type searches.. and that surfer looking for "specifics" is a good surfer to sell to if you have what he is looking for.
You will NOT get the numbers in those deep pages that you can get on the first page results..... but the number of freeloaders is markedly decreased, so the quality should be better.
Standard rule - the default search results page for each SE gets the most traffic. - eg: Google first 10 results.
DD