I definitely like this version of D.va more than the game version. I'll try to explain.
From what I've seen of the game, D.va is a childlike young adult. Her mannerisms and demeanor outline more of a kiddie personality, but her actions in battle outline more of an adult personality. What you have in the end is someone who's mostly an adult physically, but not quite an adult yet mentally. Her body compares pretty well with this attitude; it exudes both the recklessness of a child and the maturity of an adult. She's definitely got the body of someone who can control a mech suit. However, I find her to be too thin in some places. I would expect a mech suit operator to be pretty agile, which she is. I would also expect a mech suit operator to have thick and strong glutes, quadricepts, hamstrings and calves. This is something that is missing from D.va in the game. Your interpretation seems like a more realistic version of D.va. Somebody who spends a considerable amount of time in a cockpit should have thicker glutes and more flexible limbs. I see this more outlined in this version of D.va than I do in the official promotional art of D.va.
The only thing missing from this version of D.va is the decals on the sides of her suit's legs. As a matter of fact, I think no decals looks much better. In my opinion, the decals make D.va look corny and out of place. It actually takes me a little out of the atmosphere. To me, no decals make her look more like the mech suit operator she's supposed to be and less like a NASCAR racer or a character from an Extreme-G game.
Even the way she's drawn is better here than in the game. Don't get me wrong: I like the art style of Overwatch. It's got an interesting and colorful look to it. However, I feel that Blizzard made a game that's a little too cartoony for its own good. To me, it seems a bit uncanny. It would've been more interesting if Blizzard made a game with smooth-lined sprite graphics, like the art seen the fighting game 'Skullgirls'. This artwork really outlines the bright colors and smooth lines I wish were more prominent in Overwatch. Unfortunately, Blizzard eschewed a style like yours for a watery and sterile finish.
On a side note, I love the shading the way it is. That particular shading makes her look more cartoony, which is what she's supposed to be.
Not only am I going to save this picture, but I'm also going to make copies of it and back it up on other devices. This is truly a work of art! Bravo!