Wall
24.5 p, 10.7 a, 4.4 r, 2.7 s, 0.5 b, 1.9 f, 4.3 t, 37.1 m - 53.8/30.4/81.4
Thomas
30.3 p, 5.9 a, 2.4 r, 1.0 s, 0.1 b, 2.3 f, 2.3 t, 33. 8 m - 55.3/38.7/92.9
So Thomas was the better shooter with more shots and turned it over less, but Wall was better in every other facet of the game and because he was so much better in assists (and rebounds) he was responsible for far more team points scored. Pretty easy to see why Wall got the nod.