Iron Man table
I was working on this one last night, and while none of the bronzes are super easy, they don't appear to be crazy hard like Mars. I was able to do half of Tony Stark's missions, as well as 2 of the 6 Whiplash/Mandarin missions, in a single game, within about 90 minutes of playing the table for the first time. All of them involve merely hitting ramps numerous times. For each Tony Stark one you just hit each ramp around 10-12 times it seems.
All in all, completing the table seems very doable, even for me, and is probably the easiest of the bunch to complete. The only thing that drives me nuts on this table are the drop targets in front of the ball lock hole. About 90% of the time hitting that redirects your ball right to the center lane.