the matching system is the same as the normal matsuri. the problem of matsuri is that high power players since can't find anybody to be matched with usually hit the 60 seconds mark and so can be matched with everybody.

that said, about your suggestion, for what i saw by going in it: in that feature is extremely easier to be compelled to use revival potions to get the 5 wins than is in the normal matsuri (if you own decent power), so i'm not sure if would be a good idea.

if costed just 10-20 revival potions to resurrect 1 ninja i would say i would agree with you (is more balanced), but since it costs 40 i say i don't agree with your suggestion (i would be of a different idea if by hitting 4 and 5 wins you would get decent rewards exactly as happens in normal matsuri).