I was looking for some more information on the 1940s goalies and I ran across a few spreadsheets that I forgot I had which show shots on goal and save numbers for 1948-49, 1949-50 and 1951-52. The numbers are not fully complete, but a significant majority of the season is covered. I forget how I got hold of the spreadsheets, but they were compiled by "S. Klages" from sourced newspaper summaries (Globe and Mail, NY Times, Windsor Star, Montreal Gazette, Chicago Tribune, Toronto Star, etc.).
Here are the numbers:
1948-49:
Lumley, DET: 2720 min, 1155 SA, 90 GA, .922, 25.5 SA/60
Rayner, NYR 3120 min, 1661 SA, 143 GA, .914, 31.9 SA/60
Durnan, MTL: 3540 min, 1300 SA, 122 GA, .906, 22.0 SA/60
Broda, TOR: 3120 min, 1426 SA, 134 GA, .906, 27.4 SA/60
Brimsek, BOS: 2640 min, 1255 SA, 121 GA, .904, 28.5 SA/60
Henry, CHI: 2740 min, 1393 SA, 164 GA, .882, 30.5 SA/60
1949-50:
Lumley, DET: 3220 min, 1398 SA, 118 GA, .916, 26.1 SA/60
Rayner, NYR: 3740 min, 1728 SA, 156 GA, .910, 27.7 SA/60
Durnan, MTL: 3600 min, 1400 SA, 132 GA, .906, 23.3 SA/60
Broda, TOR: 4040 min, 1632 SA, 167 GA, .898, 24.2 SA/60
Brimsek, CHI: 3600 min, 1802 SA, 201 GA, .888, 30.0 SA/60
Gelineau, BOS: 3360 min, 1485 SA, 182 GA, .877, 26.5 SA/60
1951-52:
Sawchuk, DET: 3720 min, 1860 SA, 116 GA, .938, 30.0 SA/60
Henry, BOS: 3820 min, 1797 SA, 151 GA, .916, 28.2 SA/60
McNeil, MTL: 4200 min, 1885 SA, 164 GA, .913, 26.9 SA/60
Rollins, TOR: 4150 min, 1616 SA, 154 GA, .905, 23.4 SA/60
Lumley, CHI: 3500 min, 1975 SA, 189 GA, .904, 33.9 SA/60
Rayner, NYR: 2800 min, 1244 SA, 130 GA, .895, 26.7 SA/60
The guy who comes off looking the worst is obviously Bill Durnan, who was the First Team All-Star in 1948-49 and 1949-50, yet pretty clearly only managed that because his team allowed the fewest shots against, giving him the GAA lead and the virtually automatic All-Star votes that came along with it. Both Lumley and Rayner look very good in those two years, and it would be very tough to argue that either was worse than Durnan, plus Turk Broda has equivalent stats in 1948-49, which accounting for team factors likely means he was also probably ahead of Durnan. Considering what the other goalies were doing in Boston and Chicago, the case could even be made for Frank Brimsek being as good as or better than Durnan as well in those seasons.
It is also interesting that by 1951-52 Montreal was allowing a lot more shots against, but Gerry McNeil was posting better save percentages than Durnan had previously. Montreal's GAA jumped from 2.14 to 2.63 in 1950-51, the year McNeil replaced Durnan as starter, but it's uncertain how much of that was because of the team and how much of that was because of the goaltending, given that the team did lose First Team All-Star Ken Reardon on defence after 1949-50.
If Durnan was more or less average for an O6 goalie in those two seasons but was still winning First Team All-Stars, that has significant implications for his career value. His 1947-48 season wasn't anything special (assuming that Montreal didn't have a sudden one-year breakdown in team defence or anything), which means he has only two strong seasons left against non-wartime competition, and that's assuming that 1945-46 and 1946-47 were actually great years, not just more years of average save percentages behind stingy defences.
I have Durnan ranked last in this round, and I think there will be a few goalies in the next round that should be put above him as well.
It's tough to know what to make of Turk Broda. He was getting near the end of his career here (he was 35 in '49-50, his last full season as a starter). To me, the biggest question mark with Broda is whether his playoff performances were more reflective of his talent than his regular season play. I consider that to be a distinct possibility, given that Broda was famous for being overweight, for smoking between periods, and for drinking and partying. If he applied himself during the postseason but not as much the rest of the time, that could very well mean he was a better goalie than his numbers suggest. How much that matters in his ranking depends on each voter's different evaluation criteria, but given that I'm more on the side of rating a guy's talent than merely rating what he did, I am inclined to cut at least some slack to guys who cruise through the regular season if it really wasn't that important and the incentives weren't really there for them to bring their A game every night.
Also, Sawchuk's numbers in 1951-52 have caused me to bump up my rating of his peak as well. Facing the second highest shots against rate and still having a greater difference between #1 and #2 as there was between #2 and last place is very impressive. It looks like I'm going with him ahead of Brodeur in this round, with Brimsek and one of Dryden/Parent/Tretiak (I'm still debating that one) also in the top four.