When I first started watching us the 70s, the overall balance of results seemed pretty equal, but when we beat them we often put 3 or 4 past them. (I have a vague memory we beat them 4 - 0 on one of the first Sunday games we ever played).
When they hit their peak in the early 80s they used to hammer us (and a lot of top European teams) on a regular basis. They had a counterattacking style that was unusual in Scottish football at the time and most opponents struggled to cope with it.
I'm not a Goodwin fan, but I don't hate Utd and wouldn't have been bothered if they stayed up. In fact, at this point, any team with grass is OK with me. (not the OF, obviously, but I doubt I'll see them relegated in the near future).