I posted
a ton of newspaper quotes about Turgeon's playoff performances in this thread. TLDR - he was consistently a disappointment in the playoffs, playing without intensity, disappearing, and not lifting his team.
The exceptions were the 1993 playoffs and 1999-2001 playoffs, when he did receive praise for being among his team's best players.
Here are a few telling details from his playoff career.
After Game 3 of the 1990 playoffs, a reporter began an interview with Turgeon by saying "You know you've let the team down."
After Game 2 of the 1991 playoffs, Buffalo coach Rick Dudley came out and said several players had quit playing, and someone had quit playing on Guy Carbonneau's game-winning goal with a minute to go. The writers all assumed he was talking about Turgeon,
who let Carbonneau get behind him to score, and Dudley was forced to clarify he wasn't only talking about Turgeon.
After Game 2 of the 1996 playoffs, the Journal de Montreal published an editorial cartoon showing Pierre Turgeon boarding the team bus, while Vincent Damphousse and Jocelyn Thibault struggled to pull the bus with a rope. The NY Daily News wrote
“'To you from failing hands we throw the torch. Be yours to hold it high.' The problem is, Turgeon has been playing like he wants to dump the torch into a corner, skate off to the right and let somebody else chase after it."
After the Blues lost in the 1998 playoffs, Neil MacRae asked
"Did I miss something, or did Pierre Turgeon leave to play in Europe this month?" and Steve Simmons opined that no team with Turgeon as a #1 centre would ever win the Cup. In the summer of 1998, an article about projected salaries for Doug Weight and Rod Brind'Amour compared them favourably with Turgeon.
"With centre Pierre Turgeon, a soft centre who's not on anybody's Top 50 NHLers list, just getting $4.6 million US..."
After Turgeon started playing better in the playoffs from 1999-2001, many articles referenced his previous soft play in contrast to his recent improved play.
Example 1:
"The old Turgeon was highly skilled as a shooter, passer and scorer, but rarely rolled up his sleeves to do dirty work in the corners, behind the net or along the boards...He was the same guy who had a label which followed him from team to team saying he tended to disappear in big games and the playoffs."
Example 2:
"And while Turgeon has always been a reliable point-producer--his skill level prompted Buffalo to grab him with the first choice in the 1987 entry draft--he also had a longstanding rap as a soft player. He was viewed as a wondrous talent who didn't care much for operating in traffic, who had little interest in competing for loose pucks or winning one-on-one skirmishes." Dave Molinari went on to compare the new Turgeon's two-way game to Peter Forsberg (!)
Turgeon didn't fit well in Dallas. At the age of 33, he was a healthy scratch in the 2003 playoffs, and was placed on waivers without being claimed in the summer of 2003.
How, specifically, did Turgeon play soft? I'll give a couple of examples.
In 1991 Stephen Brunt wrote that stars like Messier, Yzerman, and Gretzky set the tone for their team with their play from the beginning of the game, whether they scored or not. In the Buffalo-Montreal series, Montreal stars Richer and Courtnall were doing so, and Buffalo stars Turgeon and Hawerchuk were not. Instead, Turgeon and Hawerchuk passively rose and fell with their team.
In 1996, Jack Todd wrote that when Turgeon was flying high in the regular season, he would cross the blue line and drive the net, or drive wide and wheel around the net, looking for his wingers. During the playoffs, according to Todd, Turgeon
"has tended to hit the blue line, flick a little wrist shot in the general direction of Mike Richter and then fade to the right, looking as he spins away from danger exactly like that other highly paid pacifist of the hockey wars - Alexandre Daigle. Yesterday, Turgeon wasn't even using the little wrist shot to inflate his shots-on-goal totals. He was simply dumping the puck in for someone else to chase. In New York, they chanted ``Tin Man!'' every time Turgeon touched the puck. At the Keg yesterday, they simply booed."