Trailer deliveries are ridiculous. Months of work is put into these trailers, revision after revision, late night after late night, only for the shot to be almost entirely discarded the day after delivery as the look and spectacle of it would look out of place in the context of the final edit. Studios want these trailers to look amazing so they put huge demands on the VFX artists responsible, so yeah inevitably the shots look rushed and obviously will get better before final release.