The NTG2 and the Videomic Pro are distinctly different microphones used for different purposes. One is an XLR microphone suitable for broadcast and one is the top of the range mic for a DSLR or 3.5mm jack.
We rarely compare the two of them though yet actually they serve a very similar purpose. Good off camera audio.
In the video below I compare the two of them in terms of usability and sound quality.