Crazy thing is Ray Allen is shooting a similar 3 point % as Green this finals. Just not as many shot attempts.
Ray Allen is shooting 22-34 from 3-point range this finals (which is very good), so yes he is close, but he's Ray Allen, so its expected that he shoots from 3 well(probably why you aren't hearing about it as much). Also, Ray Allen does nothing else in the box score besides shoot. If he doesn't shoot well, then he's basically worthless. He doesn't pass much or drive, doesn't defend, and definitely doesn't scrap. Danny Green has a block in every single game so far, averages a couple of assists, and about 3 rebounds, and you've seen the big plays on the defensive end with the LeBron fast break strip. Ray Allen hasn't had a single steal or block the entire series. He also doesn't even start. So he's clearly just a role player at best in the series and hasn't had the same impact as Green outside of 3-pt shooting efficiency, but 3-pointers aren't he only reason Green would win MVP.
Actually, the 3's are the only reason Green would win MVP. I love Green and his story. He's a guy you love to root for. He hasn't been the MVP for the Spurs though.
He does 2 things. He shoots 3's and he plays transition D. He has 5 FG's that are 2 PTers and 5 FT's (75 points from 3, 15 elsewhere). Any time he tries to drive is usually a disaster resulting in a block or a turnover. He can't create his own shot very well and he doesn't pass very well. He shoots open shots extremely well. On D he gets back (since he is almost always at the 3 point line) and does a good job. In the half court though you will rarely see him on Wade and never on Lebron. He can't begin to handle those guys.
Parker and Duncan are the two that are putting all the pressure on Miami and making their points by going at the Big 3. Miami knows they must stop them in order to have a chance and that leaves Green and others wide open to knock down 3's. Gary Neal is also shooting 50% from 3 and he's a scrub. There are a lot of guys that can hit open 3's, there just aren't many teams that create so many (or teams that fail to stop all the open 3's).
Green may well win but if he does it is because people are caught up in the story, not because he was the difference. You have to do more than shoot 3's and play transition D.
Oh, and if you don't think Ray Allen could shoot that well you are nuts. Allen can't even imagine being left so wide open he could order pizza like Green has on about half his shots.