American fighters are born with a silver spoon in mouth. Home advantage. Fact.

[TitoFan]

So by THAT rational, why are people in London cheering for Tyson Fury when he fights there?

Because he has fans?

And Broner doesn't?


Also let's not forget that the average fan with nothing to lose or gain in a fight quite often just want to see someone regardless of who knocked out

No Lyle. Fans in the U.S. cheer for Broner against any foreigner because he's American. Fenster has proven his point. The reason Mayweather gets booed, even against foreigners, is that there are foreign undercover fans planted in the arena, secretly posing as American fans... so it'll seem like Americans are booing their own. True American fans are denied admission into the fights, and thus cannot cheer for their beloved countryman.