Re: (Nutaku) PeroPero Seduction
which one would be more efficient then, in terms of raising the SED over time?
Neither. If you didn't play at DMM you wouldn't know, but any SED-related prizes outside of events is such a small part of it that players just stop to bother about things like daily quest efficiency etc very fast - it's good for a head start, but not for much else. Amount of WC, tickets and other consumables you get from events is so damn high there's no point in trying to count such small things as roam gatcha rate.
If you cleared story, I'd suggest just spinning free roam, using quests to get R WC. Game is made in such a way that it is them silver ones the hardest to max. You get lots of N WC, SR ones comes in 3 types with x3 and x5 making leveling top cards easy. R WC, on the other hand, are sufficiently rare that players sooner or later find themselves in situation where everything else is maxed, but almost half of R cards are still low-level.