As for how powerful these apps are, consider this. I loaded up
my 575 page Windows 8.1 Field Guide Word document, and while
it took a while to download originally (it’s stored in
OneDrive for Business as part of my Office 365 Small Business
Premium subscription), the performance reading and editing the
document was impressive. In fact, it was… amazing. This is
the real deal.
As important, the fidelity of the document was perfect: Everything
was formatted correctly, including images. I could actually write
a book on this thing if I wanted to. (Relax, I don’t.) Microsoft
claims that documents look as good on the iPad as they do on the
PC. And I gotta say. They really do.