Whatever "size formula" that game came up with to determine the size of a unit has NOTHING WHATSOEVER to do with our games and how size is determined......Ничего
We DO NOT just use height to determine size. We take into account height, length and width based on nearly 20 years of experience grading these things
If you used that formula, A Sherman and a Königstiger would be the same size which is ridiculous when taken head on

and even their own OOB's don't rate them the same
Now compare the Sherman and the T-34
That is why the Königstiger is 6 in our game, the Sherman is 5 and the T-34 is 4
It's a different game created with different sets of criteria that originated from two different versions of Steel Panthers that neither Andy nor I care about in the least..... That is WHY there are two separate games ( three when you add in winSPMBT )
The first clue about how " accurate" that chart is was what the original poster wrote before and after
"I'm not sure how accurate this is now."
"You may find some vehicles that certainly do not fit in this guideline."