Wrong. Brodeur's numbers then were in large part a function of playing behind a team that placed more of an emphasis on team and individual defense than did the others at the time. Their defensive team play at the time was blamed for producing boring hockey and spawned a legion of imitators that continues to this day... because the net results were wins.
Save percentage fails to account for the quality of the shots against. That is kind of the point.
Brodeur has put up semi-consistent save percentages, but they fluctuated a lot more year to year than his Goals Against average. What explains his save percentage bouncing between .902 and .927 besides up and down years? Sure he probably benefited from the system, but most of that came in terms of GAA and wins. Not to mention, the D men in front of him have changed a lot over time, but he remained the same goalie.
The biggest thing about the Devils old system is that it prevented the other team from getting shots on goal. The Devils allowed 22.7, 25.4, 24.4, 22.4, 24.7, 25.0, 24.5, 22.7, 23.4 and 24.6 from 1994 to 2004. That is why nobody scored on them.
No team in the league allowed as few as 25 last year. The Blues allowed a league best 26.7 and no team has allowed less that 25.0 shots on goal per game since 2007-08.
Since 2004 Brodeur has faced 28.8, 28.0, 27.1, 28.1, 26.0, 23.4, 24.9 and 26.5 shots per game, all without Scott Stevens. His save percentage did not drop at all, but his goals against average has sky rocketed.
Numbers indicate that:
SV% is almost entirely on the goalie.
GAA is almost entirely on the team as it is a function of shots and save percentage. Goalies don't control shots outside of puck handling a rebounds.