Listen, I LOVE AD. Big, big fan. I think I have three things that keep my argument valid. 1) Wasn't AD already off the air by time The Office began? 2) In terms of influence and overall pop culture stature I don't think you can argue that The Office isn't bigger. 3) The Office is going to have a massive legacy as the last show to take up the NBC must-see-TV Thursday mantle and really make it count for something.
Addressing your questions:
1) No,
The Office began in 2005 (2001 for the British version), and
Arrested Development didn't end until 2006. And actually one could argue that
Arrested Development has outlasted
The Office as it's being revived (how many other shows have been revived after 7 years due to popular demand?)
2) Since when does "influence and overall pop culture stature" = "best sitcom"? Or even factor into it? And even still,
Arrested Development is hugely influential in that area. The House Republicans released a parody video of the
Arrested Development intro the other day...if it's influenced a group as fusty and out-of-touch as House Republicans, you know it's pretty culturally significant.
3) With all due respect to
The Office's legacy, I don't see it being revived by popular demand in a few years because it was that good.
A few other things...
People keep pointing to the show's longevity as some sort of indicator of how good the show is...but by that same measure,
2.5 Men is better than
The Office. So was
Frasier and
King of the Hill.
The Simpsons blows them all away, even though it's universally recognized as drivel these days. Longevity =/= quality.
And I really don't understand how
Arrested Development is more "over the top" than
The Office. What's
not over the top about Dwight Shrute? Or Michael Scott? And I don't get the "I can relate to the characters" line, either...how many of you honestly work with someone like Creed Bratton? Or that fruity Kevin guy? The entire show is over the top, which is the only thing that makes it funny...nobody would want to watch a show of a realistic workplace, because it would be boring.
Since we're talking about what criteria should be used to judge a series' quality, I'll also submit for the record that
Arrested Development has won more Emmy awards than
The Office has, despite having 1/3 of the seasons.