Really doubt this is correct An avg artist without any writing credit easily makes $1-$1.50 per album sold so just based on Albums sold band should have made about $200 million Plus real money is in touring I would assume Jon net worth probably in region of $250-$300 million
And Bruce is definitely worth more than $200 million based on album sales and touring He makes more profit on tour since he spends a lot less on production than other major bands