This is CBM, which I think makes Marignon stronger than Mictlan at blood sac.
1) No jade knives. LA Mictlan can't get above holy 1 outside the capital, and only the King of Rain gets holy 3 and recruiting him means not recruiting the other cap only mages which are also necessary for Mictlan, and using him to bloodsac means not using him for all his other roles. So Mictlan needs to seriously sacrifice
to crank out those temple checks. Marignon on the other hand has recruit anywhere H3s which don't really have anything else they need to be doing.
2) No SDRs. Outside the cap, Mictlan only gets B1s, while Goetic Masters are recruit anywhere and 1/4 get B3. That means Marignon can spend money to get more hunters, while Mictlan needs to spend slaves to summon hunters. That's super efficient in the long run thanks to Mictlan's super good summons, but that means less actual blood available. This plus temples that actually work means that a Marignon focused on blood will have more blood to actually do things. Of course, Mari is never as focused on blood as Mictlan, but that's because of its other options, not that it's not capable.
Plus, Marignon needs to sacrifice (ha) less to get dom10. Mictlan has a strong incentive to pump all their points into a massive bless rather than spend on high dominion when their sacreds are recruit anywhere and thus not limited by holy.