I'd think the best way to make such a point is not by choosing as a comparison someone who plays a different position.
Rather, pick several other players who look very similar and play the same position, but who would be "undervalued" by CBers.
Like, you could show that Green's per-36 numbers last year were not too different from numbers posted in recent years by players like Matt Barnes, Martell Webster, Dorell Wright, DeMarre Carroll and Marvin Williams.
For example.
I chose Lin because there has been a lot of discussion about him on this board recently.
How about Anthony Morrow
15.8 p, 1.6 a, 3.8 r, 0.9 s, 0.2 b, TS% of 57.0, DRTG 114
Obviously not as good as Green, but not so far off either. He is also basically the same age with the same experience level.
or maybe Charlie Villanueva (a 3/4 combo though he leans more to the 4 than Green)
17.9 p, 1.5 a, 8.0 r, 0.9 s, 0.9 b, TS% of 52.3, DRTG 109