Namely that it is actually the STRONGEST of the cases.
When a lawyer describes a case as “strong,” it’s generally in the context of the merits of the case under the law — not for other reasons.
"Strong" as in relation to the other "Get Trump" cases and since Bragg's case is laughably non-existent, what does that say about the other cases? Plus the description is used to hint at what is in the video. I don't like to spoil surprises.