If you're flying 30k miles total or each makes a difference...if you are then you'll be getting full matching and a higher total number of points.

Citi PP points are actually worth up to 3c, so 4-6% on normal transactions.
Cap1 you're making 2% flat.

Also, wrt the "Free companion" program, its Bravo Sierra. You'd have to do a specific routing and you don't get to choose the airline AND its not always available.