Thought wrong - re-read Eriks first post the question he posed was;
"...I've long believed (though not by a big margin) this: a scratch golfer who established his handicap playing on a reasonably good golf course (no wide open munis with flat, slow greens, two bunkers, and rough a half an inch higher than the fairway) could "keep his card" on the LPGA Tour.
Now, that's not to say the guy's gonna win anything. I don't even think his name would show up on any leaderboards. Ever. But I've attended a fair number of LPGA Tour events, and I've played with a fair number of scratch golfers. It seems like most weeks on the LPGA Tour, though the leader might have shot -8 or -10 through two rounds, the cut still comes at +4 or so. I think the average scratch golfer - a well-rounded player who got there on a reasonable course, remember - would make a lot of cuts, finish in the top 50 half the time he did, and keep his LPGA card (I'm assuming that if you make 75% of the cuts you keep your card).
...What do you think? Now, again, I'm not even 70% convinced the scratch golfer could "keep his LPGA card" - but I definitely lean that way at least a little - 60/40 maybe. And again, no way the guy competes with the top 50 or so on the LPGA, but against the gals below that level, well... right now I think he's got a shot"
The question was never would the scratch golfer win on the tour (I agree he can't), the question was could he compete at a level to keep his LPGA card. Given the original question I believe my data does make the case for a scratch golfer keeping his LPGA card. I can't believe you're even trying to compare the difficulty of getting on the PGA tour versus the LPGA, some of the players on the LPGA tour are barely full-time golfers, they make most of their money as models.
And how many pga pros can't finish in the top 150, lose their card, can't keep their card from year to year, never make a cut the entire year, etc., etc..? Lots. Your data doesn't prove anything against the original premise. I can make a list just like yours full of bottom feeders on the pga tour. So what. I'm sure there are amateurs that can regularly beat the bottom 20% of the pga tour too.
I think the original question was could a scratch player/amateur successfully compete on the LPGA tour. In a tournament. Against ALL of them, not just the bottom feeders.
And to me, the word compete means in the hunt for the win, and on more than one occasion. Fat chance of that happening. I seriously doubt the up-and-comers on the mini-tours could do it. Hell, most of them will never get their pga card. They aren't good enough. And many that do, can't keep them.
I've seen LPGA pros place higher than dead last on the men's tour. More than once. They didn't win, but they beat quite a few of the men. On their home turf.