You watched him play, so he doesn't have the mystical legend status that every other player has. You've seen all of his failures on replay in high definition - things that tend to get omitted or forgotten from the careers of the old time players as we gradually lionize them over time.
He's the best playmaker not already on the list, and though I didn't participate, I'm baffled at how little consideration he seems to get, with relatively very little explanation as to why. Seems that people just don't like him.
edit: I would still take LaFontaine for the final spot.
I´ve also been following this closely (thanks all participants, been a great joy reading...) without being a part of voting or discussions and this have been my thougt as well. I think Sedin would have benefitted more from playing in decades no one had seen. With Sedins resumé; peak with Hart, Art Ross, 2 first all star team, SC-finals apparance and prime with 6 more seasons around PPG + impressive leading Tre Kronor to an WC-gold.
Before that playing in more of a shut down-role both in his NHL-team and Tre Kronor (Olympic Gold). That shut down-years would have given him more grodun if in the past I believe. The eyetest sats Sedins weren´t ready for first line-duty, but if playing in the 30-50´s it probably would be made as a point. Especially with his Guldpucken and All Star Team from SHL (Elitserien), as that could be argued he´s one of or the top player outside NHL.
And he is someone that doesn´t impresse you in a Forsberg-way. So seing him play could actually make him lesser, as he´s one of those who don´t shine much (outside some amazing passing...) but does most things right.
Summonary of my toughts about Sedin: Thornton at 34 (wich I think his high, would have placed him about 10 places neck to neck with Modano as many there between were greater player than him in my eyes...) and Sundin/Zetterberg at 54/55. Sedin is clearly behind Thorntons accomplishments, Thornton with the longer prime and just about same peak. But not 34:th best center and not even 60:th gap. Sundin with longer prime and lesser peak, Sedin could be argued ahead depending how much you put international play in to it. Zetterberg could be said to be Sedin reversed. What Sedin has done in the regular season, Zetterberg has done in the PO:s. Z and Sedin should be neck to neck for me.