The key factor in this fight is the chin. Lemieux has it and Jacobs doesn't. If a pillow fisted Sergio Mora can drop Jacobs, then Lemieux will knock Jacobs out cold. For those people who say that Lemieux can't beat a solid boxer, look at his fight against N'Dam, who's a much better boxer than Alcine. Lemieux has improved since the Alcine fight.
Acline didn't just outbox Lemieux he outfought him. He was even able to back him up. Considering Acline just moved up from LMW also and Lemieux was already with his new trainer. Ndam isn't anything special he was also caught often against the slow Quillin who was knocked out in 1 round by Jacobs. While he does move he also lays on the ropes and has the habit of being right in front of the other fighter while trying to use upper body movement. Saying Ndam is a much better boxer is just your opinion its funny how you act like it is a fact. Lemieux is limited he has always been and after his fights with Rubio and Acline he has been matched carefully until he could get a big fight against GGG who dominated Lemieux with movement and a solid jab.
N'dam is like Willie Monroe; he doesn't box, he runs. He got embarassed by an amateur in the olympics. Great stamina, not much in the way of skills.
As others have said in this thread.. Pick em fight but would lean slightly towards Jacobs as he's a bit more refined.