What Can Nethunter Do

I've been deciding the best way to make my hacking portable. I've two questions.

1: What can Nethunter do. Is it as capable as regular Kali? Can it use all the usual tools like metasploit and set and netcat and everything

2: Is it better to use nethunter, a portable raspberry pi setup with a touch screen, or just a regular laptop?

I'm also trying to stay relatively budget. Any answers to the above questions is very much appreciated! Thanks!