Webber had a better peak.
Webber also turned around an NBA franchise that was lost and probably woulda moved were it not for his era. Webber was also the man on those teams. You can say Webber folded late in games but those late game moments were against one of the greatest team's in NBA history. Before Gasol paired with Kobe, he had never won a playoff game.
Webber was better than Gasol.
I also named about 4 other players outside of Webber who either were better or would be considered better.
Pau's Memphis teams were awful. They had no business winning 50 games or even being in the playoffs and having Chris Webber instead would not have been an improvement. I've never understood how those Memphis results were used an indictment against Pau, even getting to the playoffs was a feat considering what he had.
The Kings had their best run with Webber out of the lineup. They were in 1st place through 3/4ths of the season before Webber came back and torpedoed the team. Name any Pau team that was good without him in the lineup.
Webber was very talented but he was also soft and stupid and the ball went through him far too often. The Kings success was predicated on good ball movement and selfless play that led to a lot of high percentage shots and transition scoring. Webber passed well but he also slowed the team down to run the ball through him on the high post and allow him to shoot 15-18 footers at a dismal percentage. To outsiders, he probably looked like he was carrying the team because the stats suggested that but it wasn't the case.