Bob, I considered the distance question and I said the same thing you are asking about to myself. When I saw the 0 top for Macho Again was going 7 1/2F and the previous top of 3 in Feb was going 6F I wanted to know if Macho Again would be a good fit going 9F.
The 2 1/2 in the Preakness along with the sire stats showing a TGI for Macho Uno being a point better going 1 mile and over compared to 1m and under gave me confidence the 02X pattern applied and MA should be fine going a distance of ground. If it were not for the sire stats and the Preakness number I would have had 2nd thoughts about MA's distance abilities. One of the reasons MA went off at 8-1 may have been the distance question for many bettors.
Phil