Motion controls are positional. You move a given distance, your cursor moves the exact same distance instantly. You have full control over both large turns and small adjustments. It's the same exact principle as a mouse (granted, it's a little harder to get used to, but in theory should have the same potential for top play).
An analog stick, on the other hand, is only velocity based. You move the stick and wait for your cursor to reach its destination. Sure, you can increase the sensitivity to speed it up a bit, but then you lose the ability to make small adjustments. No matter what you do, it has serious limitations.
It honestly amazes me that there are people in this day and age who still insist on clinging to analogs. It broke my heart how Kid Icarus got panned for doing something new, especially considering that it was objectively better. We finally have real alternatives that can be used on a console, time to move on already.
Remember there are sensitivity settings, experiment around if the default isn't comfortable. Turning it up is almost certainly a good idea to avoid straining your arms.