How easy is the 3rd stage of gl Luke event?

So i was able to clear stages one and two of gl master Luke event with no difficulty without investing over relicing my toons or resetting mod sets. I haven't tried the third stage yet as I ran out of tickets this morning but I don't want to get my hopes up yet as I was unable to clear gl leia up to darth Vader. How hard is this particular stage as jedi Luke against both emperor and vader?