Well, it depends. I think the real proper measure there would be stalling rather than going blitz, but that means there's little room for offense on both sides - if both sides go blitzblitz, odds are Garnet dies before getting a turn herself and Maya's still available for HP healing and she should be faster than Garnet too (so, she heals Kyogre, eGarnet dies and the other Garnet now gets a turn to Esuna or whatever, although then the thing goes "Gilgy confuses Kyogre, Priest heals Kyogre from confusion, Kyogre/Kyra/Maya boom and Garnet heals Kyogre from damage). There are four healers in the team, and three of them are faster than Garnet, so -that- particular approach is problematic.
EDIT: However, what is more problematic is that Kyogre also needs to Scary Face Gilgamesh, which brings us into another dimension. If Garnet immunes Sleep and absolutely can't get a turn or he loses to you, things suddenly get ugly because Gilgy's gonna 3-2 at least Garnet (I peg him at a bit over 1.5x average speed), and due to his three-turn living gimmick, he's bound to get a double on the whole party, so they have to tank through all the status he can dole out and he can neuter both status healers. Sooooooooooo, yeah. Maybe Gilgy 4 isn't that terrific an idea to fight against with so much support.