I surmise that Savage gets a giant boost from his 'going home from work' time slot.
If Rush had a better time slot - he'd rocket off the charts so far there'd be no 2nd, 3rd, etc
I think the flip side on that argument would have Savage with higher numbers.
Savage slot is East coast 6-9pm. Thats tv time and sports shows take his slots during football, and basketball.
Rush can be heard all day for driving to work or at work.