Let's see.... Dak been in the NFL for 9 years. Rush been in the league 8 years. Dak was drafted i n the 4th round, started as a rookie, went to the playoffs his rookie season, been a top 10 player at his position his whole career, became an All-Pro and MVP candidate and has broken some team records in the process and earned a max contract.
Now in that same time frame minus a year, Rush has been on and off of practice squads, been a backup quarterback his whole career, never led a team to the playoffs, never won a playoff game, never had an All-Pro season, never placed himself in MVP considerations, never led the league in any statistical categories, and never earned a max contract.
I can't honestly say who's the most intelligent.... but from where I'm sitting it seems that Dak's intelligence AND physical talents have taken him ten times further in life than Rush's intelligence and physical talents.