Yes and no. If your goal is to make it further than any random team, then sure. But my goal is to actually win at the end. Yes, you have to get there, but if you get there by having a team that puts up good but not great scores, then you won't win it all. That isn't to say that a 20 person team is better than a 24 person team, but in the end, I think it's irrelevant because it's going to end up being the team with the best players at the right team. 24 vs. 20 at that point has little impact as a 20 person team that has made it that far to begin with has done so for a reason.
If 20-player teams have scored more poorly than 24-player teams in weeks 1,2,3,4, and 5, why would you think they would score better in weeks 13-16?
Think about it this way. If a 20 player team has done well enough to make it to the end, why do you think that is? It is likely they have some extremely good performers and the extra $ spent on a couple of guys may have made a big difference.It doesn't mean that a 24 player team can't do as well at the end either, but I think in the end, when it matters most, 20 vs. 24 is irrelevant. What IS relevant is that the 24 person team may have gotten there because of some extra guys chipping in occasionally. The 20 person team relied on that less and likely just has overall better starters.
I think people looking at the overall #'s in terms of teams who make it isn't the right way to look at it. I couldn't care less if I have 9 Americans running the 100 meter race if the 1 Jamaican running is Bolt. Quantity != Quality. Just because there's more 24 person teams advancing each week doesn't make them likely to win. What's more important is to see of the top scoring teams, what THAT distribution is, especially as the contest goes along. And that sample size would end up being so small, especially after just 1 year of doing this, that it would be hard to draw a firm conclusion.
As an extreme example, assuming 500 teams of 20 player rosters and 500 teams of 24 player rosters. Let's assume that 450 of the 24 player rosters advanced but only 50 of the 20 player rosters advanced. Using those #'s, the 24 player roster is superior. However, if I then told you that the top 20 scorers that week were all 20 man rosters, then I think you'd look at it differently. Both can occur at the same time. When it gets down to the end, the team that scores the most is probably going to get the most contribution from his star players. At that point, 20 vs. 24 just doesn't matter.