spain cant beat yumi yabu… with lancers. IFFFF spain can get a stronger eco THEN spain can double mass skrims with full unction and win the skrim war and force japan to mix in cav AT WHICH POINT spain can trickle in rods to stabilize the trades in spain’s favor. From that point I still would not waste eco on cav switch or mass instead I’d buy cannons and force the yabu to the front and trade cannons for clumps of yabu.
To make all this work you’d have to have a strong eco to compare with japan’s eco, you’d have to have advance arsenal and full unction monks… this is asking WAAAAAAAAAY too much just to beat a skrim/goon composition.