If you want to talk 'talent' then sure you can really throw it all away. I always anticipated Glaus becoming that amazing player that his talent suggested but outside of those first couple of seasons when offense was at its peak in MLB he never really showed it. I did always like his defense at third, and his career did end far too soon.
At the same time Erstad was a #1 pick, he was responsible for arguably the best season in franchise history until Trout got here. He was the best defensive center fielder to play on this team since I started following it, but unfortunately all those catches seemed to hurt him more than they helped but he stuck it out though.
Salmon didn't have Glaus' power or Erstad's defensive skills, and it is his defensive value that brings down his career some, but he was easily the best overall hitter this organization has produced outside of Jim Edmonds.
Looking closer at the numbers I do suppose I was discounting Glaus' numbers outside of Anaheim a little too much. And a lot of the difference between the three comes down to how you rate their defense.