This isn't correct. The AVP can run apps side by side so you can have a window for xcode open along side your app. With the iPad you only get one app at a time, which is a bummer. (Even if you had multiple windows open only one app can have the full screen experience at once.
Beyond that, even though an iPad can act as another monitor, it's not a big monitor. It doesn't really achieve the ideal of a workstation replacement.
Can it? The ad showed 1 single virtual window that acted as a mirror for the macbook's screen. It never showed 2 mac apps side-by-side, each in their own independent virtual window.
This is my question as well. Is this just showing just going to show one screen with the entire macOS in it? Or will we be able to individually project different macOS apps onto the canvas?
But with the Vision Pro there is zero latency and the possibility of having many big screens, whilst when remote-desktoping into a Mac from an iPad you gain nothing and the high latency makes it worse.
Because it's not remote, if you are streaming from your Mac, it's right there, at 2m at most. It's much different than remote connecting from an iPad 100 km away.
It wouldn't, but why would you use an iPad as your main screen if you are near a Mac? It's just a screen, it doesn't bring anything special like the Vision Pro would.