Answering the question, “Is the iPad just a big iPhone?” in the negative. Love this bit about the lack of hovering:
Here’s why this section is about Controls: every day, your
cursor protects you from unclear UI. It helpfully turns into a
text cursor as you hover over textboxes, or a hand as you hover
over a link or action item.
iPad has no such thing. Bad UI will stick out like a sore thumb,
both in apps and on websites. Your tappable areas had better look
tappable. Your controls had better look controllable.