Didn't she also sing "There's A Place For Us" from WSS?
Regardless if she sang "Broadway" on IDOL or not, I say don't judge her until you hear her sing the show AS whatever part she is "offered."
Trust Bill Condon. He wouldn't give her the role if she couldn't handle it. Do you KNOW how many STARS - BIGGER STARS than Fantasia - auditioned for the role?? If he was only interested in making money, Fantasia wouldn't be cast.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle