I don't even know what you're saying here. When the author only has to focus on drawing the diamond of PS and nothing else, he's free to draw it as big as it actually is. There's limited page space. If the author has to draw PS, Kurama and the Mokujin in full scale while also showing a clear view of Hashirama & Madara on these constructs, there's bound to be inconsistencies in size.
What I am saying is, there will always be inconsistency in certain illustrations, I'll give you an example
I provided illustrations of Madara in his initial display of Perfect Susano'o,
See how the author depicted Madara in his diamond - , The DIamond looks much smaller yet the earlier posted links show the consistency of the Diamond with Madara inside.