The captaincy thing is dumb.
Guy Lafleur was never captain of the Canadiens. Should the Habs not have retired his number?
Are you saying that if Fedorov would have stayed in Detroit he still wouldn't have got the jersey retirement because he was never captain?
A guy leads your team in scoring 8 straight years or whatever, finishes 6th in all-time franchise scoring, during one of the best runs in franchise history -- while being named best defensive forward 3 times.
Oh, and he produces highlight reel plays on a nightly basis...
Fedorov only led the Wings three times, actually. And he is easily more deserving than Datsyuk is right now; Dats is 228 points behind Fedorov's Wings totals in 170 GP. He'd have to score at a 1.34 PPG pace over the next 2.5 seasons to reach Fedorov's numbers; an average of 110 per 82 games.
Also, Fedorov might have become captain if he had stayed; it's possible he'd have outlasted Lidstrom; he still hasn't officially announced his retirement and with Detroit's trainers he likely would have been in better condition to continue playing at a higher level.
Some people (see the post you quote) always use the "match up" argument as to why Z's better defensively. First of all, that's hardly even been true the past couple of seasons now. Datsyuk was given many assignments at home against top lines when he was healthy the past two seasons.
Possibly because he was being outperformed offensively by Zetterberg. Both in terms of raw totals and per-minute numbers.
Datsyuk has been better defensively since after the Cup in 08. To no surprise, Z's defensive value peaked in 07-08, when he was playing so many games with Datsyuk. Since then Z's unit has spent more and more time in the defensive zone.
Zetterberg's defensive value "peaked" as you say because he had a career season offensively as the sniper on Datsyuk's line. In the 2008 playoffs, he was moved to center full-time, and has stayed there. The following season, Datsyuk played most of the year with Hossa (who scored 40g/71p in 74GP IIRC) and Holmstrom (37 points in 53 GP), while Zetterberg had far weaker linemates (typically Franzen 34g/59p in 71GP and Cleary 14g/40p in 74GP). Zetterberg was typically used as a shut-down center while Datsyuk was kept away from the opposing team's shut-down center. Result? Zetterberg's offense suffers considerably compared to Datsyuk. Going into that season there were many experts who rank Zetterberg not only as better than Datsyuk, but as the best player PERIOD. In 2009-10, Datsyuk and Zetterberg tied for the team lead in scoring, despite Zetterberg playing fewer games and playing more of a shut-down role. Yet Datsyuk once again won the Selke. This was the most baffling of the three. The 2008 award, Detroit writers (among others) before the award ceremony wrote of how Z "was going to add the Selke to his Smythe", so that came as a bit of a surprise . It was understandable in 2009, when Zetterberg had a massive offensive drop, that he wouldn't win the "defensive" award. But when Datsyuk had the same drop and scored equal to Z, who was clearly the better and more relied upon defensive player; this boggled the mind. And the last one, 2011. Zetterberg had an amazing season, finishing in the top ten with a PPG performance. Datsyuk missed a third of the season injured and wasn't as significantly relied upon for his defense as before compared to Z, Helm, Cleary, etc. due in part to that. Yet Datsyuk was still in the top three.
That year has pushed me towards feeling that the Selke is beginning to lose its meaning; if a player - even one who is great defensively when at 100% - misses half the season and doesn't play a major defensive role on his team when he is in the lineup, yet finishes top-three in the voting... what exactly does the award mean?