Stop the cap, it's pathetic, he literally focused on King and Queen directly when saying that.
Apoo isn't "defeated", he's lying down and got back up with no lingering damage, that is the so called "lethality" you are talking about lol.
That shishisonson literally was shown with a lions skull on Zoro, the fact that Zoro was enraged and didn't say it, doesn't mean it isn't shishisonson. Also not a one shot because Apoo was fighting both of them earlier, it was a "finisher", not a "one shot".
It's not even Queen's weapon in a serious sense, more like a toy he uses to troll fodder, he made no attempt to use other plague attacks in his serious fight with Sanji, just like he made no attempt to fire his lasers or get serious here.