So I tested the new ultralisk... and while they do better against roaches, Marauders still annhilate them, with or without kiting. Though kiting does mean you can probably get away untouched.
The matchup I made was 1 Ultra vs 4 Marauders... without kiting about 3 survive with half health.. with kiting 3 survive with pretty much full health..
Note: also found that overseer can only cast one infested terran even with full mana... it's pretty lame.. economy harasses are not likely unless you mass overseers and have them use many infested terrans.. but if you run your economy away, infested terrans are too slow to catch up...
frenzy is kind of cool..? overseer contaminate is definitely a better use of mana.. shield being destoryed by massive units was also cool

