Actually, I do have an android tablet and they are rather limited to what they can do compared to an iPad. Sometimes you have to do extra steps to get them to work. For example, I have a DropBox account. There is no app for that but you can accomplish the goal with a third party app and many more steps.
I use mine for reading e-books and some game playing.
The used computer will accomplish what he wants to do much easier.
...Deb