Eh, Clancy's last season as an All Star was 1934, so his prime didn't exactly overlap with Conacher.
Wut? Of course it did.
Conacher's career was 1925-37.
Clancy's career was 1921-37.
Conacher's ASTs were in 33, 34, 37.
Clancy's ASTs were in 31, 32, 33, 34.
Conacher's Hart voting came in 26, 29, 34 and 37.
Clancy's Hart voting came in 25, 26, 27, 29, 30, 31, 34.
Conacher's top-scoring seasons were in 27, 28, 32, 33, 34, 37.
Clancy's top-scoring seasons were in 25, 30, 31, 33, 34, 35.
There was only one season, 1937, where Conacher was a star and Clancy wasn't... but I wouldn't call that Conacher's prime as it was the last season of his career.
Leetch led all NHL defensemen in scoring as late as 2001 - it was his defensive game that had fallen out from under him - his offensive game was still quite strong
I don't think Gonchar is particularly weak competition of we are just talking about offense.
I just realized that the arbitrary 7-year timeframe begins with the lowest point total of Conacher's career. Also, in 1937 Clancy only played 6 games so that cutoff favors Conacher unfairly. It makes more sense to cut off those two seasons and just go with his 5 best seasons in direct competition with Clancy.
Looking at those years from 1932 to 1936, Conacher had 89 points to Clancy's 108 (82%) and Shore's 121 (74%). In Blake's best 5 years from 1998 to 2002, he had 257 points to Leetch's 265 (97%) and Lidstrom's 319 (81%). Also, Gonchar was higher-scoring than Clancy in adjusted points during that timeframe (49 points to 45). Ithink those numbers are a better representation of their primes and competition, particularly since Leetch is being held as Blake's career comparable the same way Clancy is to Conacher. They are, I think, decisively in Blake's favor as far as prime offense is concerned.
-----------------------------------------------------------------------------
There is a problem with those career numbers, though. As noted above, Conacher's career has a very neat overlap with both Shore's and Clancy's. So it's pretty informative to say Conacher was the third-best offensive defenseman of that era, since his scoring totals can be held in direct comparison to the other two great defensemen who played during that exact timeframe.
The same isn't true of Blake and Leetch. Leetch retired 4 years before Blake, who piled another 140 points onto his record in Leetch's absence. In fact, if you only look at the years when both were in the league together, Blake ranks
seventh in points behind Leetch, Lidstrom, MacInnis, Bourque, Zubov and Housley.
Also, it's noteworthy that Blake had a strong rookie season (1991) right before the rookie seasons of Lidstrom and Niedermayer (1992), and two seasons before Zubov (1993). If we look at scoring 1992-2010, suddenly Blake bumps back to fifth behind Lidstrom (70%), Leetch (91%), Zubov (95%), and Niedermayer (99%). Zubov drops to 88% if you only look at his career.
Reader's Digest version: Blake is the third-highest scoring defenseman of his career by happy accident of having been slightly younger than Leetch, and slightly older than Lidstrom and Niedermayer, and because Zubov retired early. He's more like the 5th-7th highest scoring defenseman of his cohort. He is farther behind Lidstrom than Conacher was from Shore, but closer to the others than Conacher was to Clancy.
I'm still impressed with Blake's numbers, though. He didn't get nearly as much attention as the rest of his cohort and was a helluva lot better defensively than Zubov.