Originally Posted by
ShadowMiku
I'd just do what I do and put all your S cards into your deck and ram into B groups. Pretty successful for me. All though I do have the 5 strongest S cards so pretty much depends on what S cards you have in your deck at this moment.
Either could work if you have 4-5 top S cards + a lucky helper card to seal the deal but for people who can't or haven't used EX Wilds on their best S cards (Lilith for example) or don't even have the best S cards period, using the 3x multiplier you get for facing B teams always helps. That way if you have all 5 S cards there no matter what SR or R they are, you're bound to run into majority B cards so you'll win regardless of not having the top S cards.
Bottom Line: Only consider facing S decks if you have ex leveled a majority of the best S cards. If you haven't done that then you have to face lower tier S decks in hopes of not running into someone who has stronger S cards then you because of there being no multiplier. Whereas facing a rank 2/rank 1 B team doesn't really matter unless they have slayers. So pretty much just stick to destroying the B decks.