Is Huntsman a perfect VP for Rubio?

[Mister Mets]

No.

The running mate needs to at least have the same general worldview as the nominee.

This. Huntsman probably views Rubio as a party hack and most likely wouldn't even accept a VP offer from Rubio.

If Huntsman wants to be President, he'd take Veep.

[Mister Mets]

I do think Huntsman would be a great running mate for Rubio.
He's older, but not too old.
He adds geographic diversity.
He has accomplishments in the private sector, whereas Rubio has been in politics since he was in his 20s.
He has executive experience.
He has significant foreign policy experience.
The media likes him. He has moderate credentials.
He's dull, but that's not necessarily a bad thing with Rubio's charisma. Look at Clinton and Gore, or Reagan and Bush.

And if he wants to be President, his main way of doing it is being Veep, or at least handling himself credibly as a candidate for national office.