Now here is where you lost me. I'm not sure why it would be different. I don't really need to look at my mouse wheel to scroll properly. You would just touch and wiggle your fingers around while watching the image on-screen.
First let me say that you are right in that none of this is impossible with one method or the other. I'm only arguing that I like multitouch a little better for these situations. Clearly we've been ok with manipulating maps and zooming on things with the regular controllers for years.
That said, the dpad/analog method requires a few more steps, right. Like switch to one mode for panning, switch to another for zooming, switch to another for rotating. Whereas with multitouch I could press one button (click touchpad maybe) to bring the map up on the TV, and then I can control all three of those aspects with one single motion. I can make the map bigger, spin it, and zoom it, all by putting two fingers down and twisting/spreading/pinching slightly. It's really hard to beat that for this kind of manipulation. The analog would need to know which aspect to adjust: zoom? pan? rotate? and necessitate mode switching.
Yeah, the controller set up would require more steps for the more complicated tasks. I started off giving the example of one clickable analog stick vs. pinch-to-zoom on a touchpad. But I am also saying that these other tasks could be done by mapping the various commands to both sticks and some buttons. And I'm also saying, that while this method isn't ideal, in my "prediction" it isn't that much more cumbersome than using a trackpad.
Now, we if want to move the dicussion to the Gamepad and the Dualshock 4... I'd say that since both have analog sticks/buttons, the difference comes down to the Wii U's larger single-touch screen vs. the DS4's smaller, multi-touch touchpad. And I can't take any argument that says the DS4's multitouch will be anything greater in terms of overall functionality than what the Gamepad could offer.
I would much rather do a pinching/twisting motion a touchpad than push a button and move a stick and not move my hand from the contoller.
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Now you're playing with power!