You are right. He was the UPI DPY in 1990. Having said that, I think he made a difference. I think he did exactly what we hope a big time edge rusher might do for us this year. He created a situation in which he had to be doubled off the edge and that allowed others to be better. If you look at points allowed from 1991 to 1992, I believe we were something like 17th in points allowed in 1991. In 1992, we finished 5th. Offensively, we were pretty good in both 1991 (7th) and in 1992 (5th).
Tolbert and Jeffcoat both substantially outplayed Haley in 1992.
Haley did start over Jeffcoat but Jeffcoat playing behind Haley had 10.5 sacks to Haley's 6.
Haley was simply too limited with his back. He just wasn't on the field all that much. He finished 4th on the team amongst DE in snaps.
Part of why SF dealt him was attitude but the bigger reason was his back.
Reality is neither Haley nor Deion gave us the immediate impact we thought they would when we got them.
Both had all pro caliber seasons as Cowboys but they came later on.
And no, a guy we sign who has 6 sacks would be lauded ONLY if he was some Mincey type deal.
Demarcus Ware drew double teams for his entire career and had double digit sacks.
We don't have to guess what that looks like.
As Haley and Deion detail you can add hall of fame talent but it is no guarantee you get hall of fame return in any season.
They really are better examples of why to stand pat then they are of making a big move.
Jerry probably agrees with you which is why he made other stupid moves like Galloway AND RW11 et al later on.
But the reality is those moves were cautionary tales.