Please don't make any Eric Staal polls this year. He's having an off year (eventhough he scored his 20th last night). He's not gonna any of these top guys from his draft. So basically we can cross off the Parise and Vanek polls too.
I think some people might be confusing "better overall" with "well rounded." It's pretty close for me, I think people just associate leadership with defense and doing the small things right, and they rarely think of the pure offensive finesse players as great leaders even if they are awesome leaders.
Until Staal proves that his 100 point season wasn't just a fluke, I'm not sold on him being a 100 point player year in and year out. Not saying that he isn't a terrific playmaker and a great goalscorer, I just think that he will settle in around the 70-90 point mark every year (he has got to pick it up this year haha).
Thats also the range that I expect Richards to be year in and year out, and like others have alluded to, Richards intangibles give him the nod. Both are great franchise centers however.