The main difference is all those guys you mentioned show some inkling of emotion on the golf course. A large percentage of the LPGA Tour show no emotion. For example, Sung Hyun Park is like watching a robot play golf. The next smile she cracks will be her first. The lack of emotion coupled with the fact they bunt it around a 6200 yard course makes for a bit of a snooze fest.
You mention Scott Parel, thats part of the issue with the Champions Tour. He was a nobody prior to his CT time. The CT needs some star power to make it relevant IMHO. But if I am going to watch people I don't know or care about I would at least like them to be playing interesting golf.