Apple iOS 6 / iOS 7 contradictions.

In iOS 6 Apple had a card style UI for their Safari browser, but decided to remove it in iOS 7 for an alternate method.

You'd assume they implemented this new method because it was a better way of displaying the information, right? But if that's so, why have they implemented a similar card style UI that they removed from one part of the OS and implemented it in another area (multitasking)?

Surely the action you're taking is very similar in both situations and they could have had a consistent experience across the two? Why have swipe left on Safari and swipe up in Multitasking to do the same thing (close something).

Anybody got any ideas about why they did this?