And as I just said, it doesn't even matter because in every shot, quite literally every panel mind you, even shots where he's the focal point, or shots where his height and directly be compared to things drawn with great detail (Aka, things being emphasized), it's different every single time.
We don't use it for a reason lad, every panel scaled had widely different heights, and none of them, not one, was even remotely close to 270m.
If you want to argue 270m is legit, consistent, and even viable in that particular panel, prove it's consistent as a whole first. In order for you to even attempt to argue that Kachon's calc is wrong you'd need to prove Beefcake's height is consistently portrayed to be about, or around 270m, otherwise how do we know he's being accurately depicted as 270m in the panel with the hole?
Don't fix what ain't broken, and you need to actually prove it's broken first.