Of course I'm not going to argue that anyone is as popular as the Beatles, but I'm pretty sure the Stones would also have had universal long lasting popularty if they had only been around for the same amount of time.
You also can't compare the wealth of McCartney to Jagger. Firstly, McCartney had a very successful solo career after the Beatles, during which time he released way more albums than the Stones in the same time period and did his own share of touring. Secondly, McCartney owns a significant music publishing catalogue and has other business ventures.