Warner/Cards offers no comparison in this situation.
No one claimed the Vikes didn't get better.
Minnesota did not make this move to get to the NFC title game. They did it because they were thinking SB or bust. & they busted.
Failure.
Example. I'm a car racer. I know my car & crew, @ present, will never win a race. I'm having trouble reaching the top 5. So I reshape my team, change cars, throw the bank @ my organization, going for broke to finish 1st. And after that, I still finish 2nd in points. Now did I get better? Sure. but I didn't want to just get better. I wanted to win it all. That's why I made such a drastic change.
That same w/Minny. They put their entire training camp in disarray. They had tehir team divided over the whole thing. They changed their offensive philosophy. And they got better. But they still didn't win it all. That equals failure.