It's hard to browse the web with an iPad

Headline is wrong.

Actual finding: it's hard to accurately shop a complex ecommerce site with tiny objects and links designed for a mouse crammed together and shrunken into a non zoomed viewport. It's easier to use an app, or the input device the website was designed for. Takeaway should be: redesign for touch. See Gmail's new touch friendly "desktop" design for an example.