I think the Rams are going to play more zone coverage against the Vikes. Not entirely of course; everyone mixes up zone and man coverages.
Hill and Shields are not Talib and Peters. So almost entirely man on the edges likely can't hold up against the Vikings receivers.
What this means, though, is that the Rams will have to get early pressure on Cousins. The thing with Zone is that it depends on not allowing the QB much time to throw the ball, because eventually a Receiver will find a soft spot in a zone, given enough time.
The good news is that the Vikes Oline is not a strong one and AD is due for a big game.
The bad news is that unless the Rams can get regular pressure on Cousins, we'll be forced to rush 5 and that opens us up to big plays.