Ok, stage 4 and 5 were laughably easy compared to the 1st stage (and stages 4-6 of the Kylo and Rey events). I don't know that you could actually lose those stages. You take your SEE and pick two other sith/empire from a list of Vader, Maul, EP, Marauder, Dooku, Darth Sidious or Royal Guard (though it says it's optional to take anyone). Then you face GL Rey and Ben Solo essentially mirroring the scene in ROS. However, they give you the ultimate to use, so basically you get to mark/link them both as the first move, then Rey goes and gives protection to Ben, then your other sith go (in my case I took DV and EP), then your ultimate gets charged, you hit it. Then they take a turn and it gets back to you and SEE gets to actually use the ultimate ability and it instantly kills Ben and puts Rey at like 100 hp, which gets taken off when your next dude takes a turn. You would have to actually try pretty hard to fail at this one. Apparently stage 6 is the same and it's the same difficulty for JML as well for the last 3 stages.