Its been like this for years. Jones, Scrivens, Budaj, Keumper, Enroth, Campbell, Petersen, et. all. The team plays noticeably different when they've got back-ups behind them vs when Quick's in net. Quick has terrific lateral movement, he can go post to post as well as any goalie in the league. His defenders know this, so they're more aggressive in pursuing pucks in the defensive end because if they make a mistake and leave a player open Quick can bail them out. With the back-ups in net the defense plays more reserved, parks in front of the goal and tries to limit the high quality chances. This leads to higher volume of lower quality shots that inflates the SV %. Its clear as day to those watching these goalies that the SV% is a terrible metric to compare them.