The 80's was such a trans-formative decade in the world of pinball, that I usually break the decade down into games made before System 11, and those made after it. I'm a huge fan of Bally games in the early 80s, but games made after 1983 they just lose their appeal. Trying to compare Whirlwind to Fathom is just unfair, even though they are both absolutely awesome games in their own right.
In my opinion, Williams owned the pinball market after High Speed, and had a darned strong showing for the rest of the decade with games like Black Knight.
Gottlieb had a few awesome games like Black Hole and Haunted House, but they never really recovered from the reputation that they earned from operators for being unreliable during the transition from EM to SS in the late 70s.