There very alike, but because of HBO, Showtime and Golden Boy deluding people that Broner is some sort of defensive wizarrd like Mayweather, people don't see it. Broner is Rios with a poor punch output, feather fists and a glass chin- hence, poor man's Rios :deal
Rios only fights one way,,..... Broner on the other hand controls the mid-range much better, can set up a counter punch,,, and is much more accurate,,... Having said that, Rios beats him up if they fight..
Great comparison, I can see why you selected such similar type of fighters. This is akin to the following: Mike Tyson a poor man's Lennox Lewis Rocky Marciano a poor man's Willy Pep Pernell Whitaker a poor man's Arturo Gatti Julio Cesar Chavez a poor man's Niccolino Locche