it is too late to argue what the boss would have done anyways, he is dead now because Jannette has no idea how to haggle.

What is now going to happen is the 4 other guys are gonna raise their guns and start shooting, they have MAC 10 right? those are like the most common weapons used by the mafia, full auto pistols. Maybe Li ans Sera kill 2 or 3 of them before they can shoot, but one of them at the very least is gonna be spraying bullets in Janette's direction and she is gonna get shot.