Globally, according to Forbes' rankings of July, the Cowboys are followed by baseball's New York Yankees at $3.7 billion, a figure the Patriots have tied.
The average team is now worth $2.52 billion, according to Forbes.More news: Narendra Modi dedicates Sardar Sarovar Dam to nation
Forbes says the value of the Bills was up 7 percent since a year ago, better than 13 other teams, but they were still looking up at the Detroit Lions ($1.7 billion) in 31st place.
The Cowboys, for more than a decade the NFL's most valuable team, are now the top franchise on the planet with Forbes placing their worth at $4.8 billion.
2013: $840 million (31st of 32 teams). That's more than double (an inflation adjusted $1.1 billion) what the teams were worth in 2007, the first full year under Roger Goodell's leadership.More news: Trump to work on building business ties at United Nations assembly
Working against National Football League team valuations, however, are sluggish TV ratings, which declined 8 percent last season, Forbes said. Values increase with inflation, postseason revenue, rights fees and stadium renovations.
The Panthers had profits of $102 million last season, Forbes said, thanks to ticket sales, merchandise sales and other revenue streams.
The Falcons enjoyed a league-high 16-percent increase from last season, coming in at No. 15 with a value of $2.475 billion.More news: Tropical Storm Watch in effect for southern Connecticut
Still, the Bills, who once again ranked 32nd with a $1.6 billion value, represent just one of five teams with an under-$2 billion mark.
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