So is there statistical data that shows that you should win your league >90% of the time or whatever if at every position you have a top 10 player
Say you have a top 10 RB1, RB2 (when compared to other RB2s), WR1 etc.....
In 2005, the #10 players for QB1, RB1, RB2, WR1, and WR2 were:QB: Kerry Collins
RB1: Mike Anderson
RB2: Tatum Bell (coincidentally)
WR1: Hines Ward
WR2: Deion Branch
So I'd say, at the bottom end of top 10, no, you wouldn't win your league with that team, although it's not bad.
But "top 10" isn't equivalent to #10, of course, it just means "at least as good as #10." If all rankings for "top 10" are equally likely, you'd wind up with QB#5.5, RB1#5.5, RB2#5.5, etc. I'll round those up to #6, and that gives you:
QB: Drew Bledsoe
RB1: Clinton Portis
RB2: Brian Westbrook
WR1: Torry Holt
WR2: Eddie Kennison
I'd say that team is competitive, certainly has a shot at the title if things go the right way.
If you round down to #5, you get:
QB: Matt Hasselbeck
RB1: Edgerrin James
RB2: Domanick Davis
WR1: Joey Galloway
WR2: Reggie Wayne
A stronger team than #6, perhaps significantly so, but not a shoe-in for the championship or anything like that. The VBD total for this team is 18+125+24+72+19=258. That's not bad, but consider that the Shaun Alexander owner starts out with 221 VBD points. This team, comprised of Alexander, one decent WR, and baseline players at the other positions, scored more points than the "#5" team above:
QB: Jake Delhomme
RB1: Shaun Alexander
RB2: DeShaun Foster
WR1: Donald Driver
WR2: Laverneus Coles
So, it's better to have a couple of top players than a bunch of moderately good ones.