Not really? The iPad isn't velocity-sensitive, and it doesn't have aftertouch or any tactile feedback. A "regular computer" at least has straightforward MIDI routing that you can perform with - the iPad gets outclassed by decade-old Octatracks in terms of performance flexibility.

Ciani is the perfect example that I was about to bring up myself. I got to see her perform live at a conference, and out of her whole setup, she waxed poetic most about her iPad.