In terms of camera comparison between the iPhone and iPad, the iPhone camera tech has always been superior to the iPad. I believe Apple tends to be a generation or two behind in regards to camera tech for the iPad, for example.. 2021 iPP is comparable to the iPhone 11. But not quite as good as the iPhone 11, since it has two 12MP cameras compared to 12MP and 10MP in the iPad Pro.
But I basically use my iPad as an iPhone… it being cellular, gives me the advantage of always being connected. However, my iPad serves as a laptop replacement as well. i tend to do quite a bit of task with my iPP. That’s why the iPad is invaluable to me with the roles I’ve given it.