
I used photoshop to draw the horizontal lines and then used the measuring tool.
Conveniently the difference between Pierce and Perk, and Perk and KG are the same, so according to the listed heights, yes something is awry.
But, there is a whole lot of assumptions here that just arent good. Like
-The picture is straight
-There is no fisheye or parallax effect.
-They have consistent shoes on
-They are all standing up straight (which is a really bad assumption)
-The are all standing on the same elevation
The basketball was the only fixed dimension I saw in the picture, so if someone wants to use that they can, but again, there is just a whole other group of assumptions there.