VIDEO : Richard Sherman's Big Bro -- Erin Andrews Rant ... Was GREAT For Our Fam!

If you thought Richard Sherman's "Don't Ever Talk About Me" rant was priceless, think again -- 'cause the NFL star's brother tells TMZ it made the family a TON of money!! Richard's older brother Branton Sherman -- who's also the business manager for the Richard Sherman Family Foundation -- is out in Phoenix to root for the Seahawks ... when he we asked how he felt about the legendary moment with Erin Andrews last year. Branton says, "We made so much money off of that whole deal.