No, sending 2 admirals is the least they can do + SSG stuff. That's the alliance which defeated two Yonko, they know that. Also, according to the spoilers, Greenbull flies towards them. I guess the remaining admirals are in the ship while Greenbull is the first one to start the attack.
Tbh, I don't think Zoro pulls stuff like that out yet, that's some endgame stuff.
However, demolishing the navy forces with CoC slashes is a thing I'd really like to see. Either way, navy forces will be forced to retreat, even with an admiral around. The alliance is just too powerful rn. They even waited an entire weak for their invasion, giving them all enough time to recover lol. I really hope they're sending one more admiral, otherwise they're gonna be wrecked.