Originally Posted by
ijgordon

You get 5 points per $ charged with airlines on the plat card, and they’re worth about 1.3˘/point on Delta, so 6.5 cents/$ charged. And travel protection insurance is included as well.
It all depends how you spend your money. Yea, if you spend tens of thousands per year on flights, including Delta, the Platinum is probably a solid option for you.
CSR also includes airfare (also with travel protections). Not to mention hotels/airbnb (without portal, bonus with portal), cruises, 10x(15x) Lyft, trains, campgrounds, car rentals (with primary insurance), travel agencies, parking garages, etc. They also have good transfer programs available to premium flights, Hyatt, etc. All with lower AF, also with a credit that requires zero thought if you use the card for absolutely any category above. With this in mind, there is a strong possibility that people exist where this math works over the Platinum.