And I'm sure you're right too

But to argue my point... Obviously, it is different with Sunday. It is less of a puzzle, and even by the costumes you can kinda guess where people will end up in the final tableaux (not to mention obvious mentions like the one about him sketching monkeys). I don't think in this case it makes the act any less effective or hard to sit through, or even less theatrical when it still does finally come together. With ITW, while we expect a happy ending, there is more tension there.
(And yes, as much as I love it, I think ITW's second act is a bit too long).
However, in that respect they're different shows. Sunday's Act I is made up of more varied and shorter scenes than Act II, but it's hardly action packed--it's many moments. The second Act just has longer, and fewer moments. (Oh dear, I don't think I explained that compellingly at all, but I'm not sure how else to). Act II mirrors Gerorges' inability to "connect" to other people, but allows him finally to--so I think we have to see some of the repitition.