Are all the best American Boxers in the NFL and NBA?

[robinswe01]

A difference between Football and rugby is fitness. Football players are nowhere near as fit. They play for 10 seconds and have a minute break. Rugby players play for 40 minutes straight, have a 10 - 15 minute break and play another 40 minutes.
As football players stop every 10 seconds it gives them time to plan moves and for the other team to set up their defence. In rugby you need to work to get back if you are in defence. You also have to support you own team mates when they get tackled as if you don’t you’ll lose the ball.
Rugby is far superior IMO.

As for the boxing, it is probably true. There is more money to be made in football then boxing. Its only the super star boxers who make more money that football players.

PS
Jonah lomu would have been an ATG if he had played football. Look him up. 6' 6". 125 KG (20st). 100m in 10.88.