Why Is This The BGP Best Path?

Why is the top one the best path. See the link below

http://oi60.tinypic.com/28juue1.jpg

 

Brain said it was because of the AS Path, but I don't feel like I agree. The reason why I don't agree is because he also says that the confederation set is counted as 1 AS in the path. That's all he says.

 

BUT, this would actually mean that they BOTH have an AS path of 2??????. So this is very confusing to understand what he is trying to say.

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