Manning's investment portfolio includes part ownership of two Anheuser-Busch distributors in his native Louisiana; as you probably know, Anheuser-Busch brews Bud.
And in case you think maybe Manning was being paid, perhaps because he very likely is about to retire from the NFL, he made a similar proclamation a couple of years ago after a postseason win (then he wanted Bud Light)
So just as sharing an embrace with pizza impresario "Papa" John Schnatter on the field was something of a business move for Manning (he owns numerous franchises), sharing his Bud craving was too.
Peyton turned winning the Super Bowl into his own self promoting commercial. But, hey, that Cam guy sure is a pompous dick, and Peyton is all about the team.