Nah. See it like this, IW will get maximum exposure if the trailer is attached to TLJ. JL will be big no doubt but it'll be nowhere near SW (TLJ) big. Plus Jurassic World Fallen Kingdom will also debut their 1st trailer with TLJ so it can potentially upstage the BP trailer. Also IIRC, the CA:CW trailer was attached to TFA so it makes sense to debut the 1st IW trailer with TLJ.
OTOH, I'm looking at potential big trailers that can be attached to JL and the only one I'm coming up with is Ready Player One 2nd trailer. Since there is no news on that front I assuming it isn't ready yet. So it makes sense that Black Panther trailer 2 will be big event trailer playing with JL.