Also, as far as considering Colville in the same group as Lach, Bentley and Abel.
Colville was 4-6 years younger than each of those players. Normally that wouldn't be a big difference, but the timing of WWII meant that Colville went off to war when he was 28, and returned to the NHL when he was 31. As noted upthread, there was a noticeable lack of over-30 players in the years immediately following the war (maybe due to war effects, maybe just by random chance, I haven't looked into it) so he was actually the oldest player in the league at an unusually young age.
This put Colville in a different cohort of players than the other three, who were distinctly post-WII players. Bentley left for war at only 22 and came back at 25, winning a couple of Art Rosses right off the bat as he was still in his athletic prime. Abel came back at 28, the same age Colville was when he left. Lach was virtually unaffected by the war, other than beating up on a weak league in the absence of serious competition. Coincidentally, all three of them played until 1954, compared to Colville in 1949.
Which isn't to say that they should be compared as being part of the same large-scale "era" -- but there's an unusually large gap in circumstances for players so close in age. Colville's career timing is awkward and tends to defy comparisons to post-WWII players despite being part of a similar demographic.