There is only one realistic argument against making this fight and it goes something like this:
George St. Pierre hasn’t cleaned out the Welterweight division
or
This fight will be a major set back for the Welterweight division
To conclude that there will always be a #1 contender in a division with two or more fighters, statistics are not needed. And while Hendricks is a valid #1 contender, Silva does not really have one. If we wait around until both divisions have no strong top contender, we will be waiting a while. And as you will read below, we cannot wait much longer.