That’s much better.
Though I have some nitpicks:
How would it look like if the Leo 2A4 gets shot with M774?
Would there be any difference (for example, amount of green area increases?)
If the 2A4 decided they wanted to be more survivable, they could only take bustle ammo.
I know you decided to take a median opproach, but there’s not really any other way to make the Abrams more or less survivable - unlike with the 2A4. To be honest, 16 rounds of APFSDS is not great, but you can work around it.
Interestingly enough, the top portion of the Abrams’ mantlet (effectively the same size as the 2A4’s turret ring / driver port weak spot) is weak enough such that 120mm DM23 can go through and even explode ammo:
Since the first stage ammo of the Abrams is 22 rounds, the left forehead of the breech should all be red, whereas the right forehead of the breech should be how it already is.
I tried the same with the 2A4, and it seems to be the case here:
So what this suggests is that you can take 16 APFSDS rounds - and expect that top right portion of the breech to be a 1-shot kill for the 2A4.
This also suggests that if you take more than 17 rounds of APFSDS for the Abrams, the right portion (albeit smaller) of the breech is a 1-shot kill too (from a small segment of it to the entire right portion depending on how many rounds between 17 to 22).

You included the small portion of the 2A4’s driver’s port where you can 1-shot the 2A4 - which is fine.
I’d also add the small portion of the Abrams’ UFP, which is only 19mm thick, and is the part where the plate meets the 38.1mm plate:
The diagram you presented only shows the breech as a module.
What if you only include things, like the engine, turret ring, and vertical drive… maybe in a different diagram?
(This is generally a more detailed analysis I’ve done around that area of the Abrams).
Red - non-pen
Yellow - module damage / 1/2 crew kills
Green - almost always a 3 crew kills
Also, I think this also applies when talking about weakspots and survivability:
At far ranges, and for flicking shots, it’s easier to shoot centre mass of vehicles than not, which I assume you agree with.
You need greater fidelity / resolution / accuracy (with your eyeballs and cursor) to shoot for the bottom left of a dot than the center of that dot.
For example, if both vehicles were an array of pixels 7x wide, and 7x tall, we may get this:

I can’t speak for you, but I believe it’s easier to hit the one on the right than the one on the left, if you had only a couple seconds to do so.
If you do miss the Abrams’ 1-shot area, you’d either hit the UFP (nothing), or the breech.
If you do miss the Leopard 2A4’s 1-shot area, you’d either hit the upper UFP (ricochet), or the LFP (which you will get the driver, engine and maybe the gunner).
So I believe trying to go for one-shotting the Abrams is easier than trying to go for one-shotting the Leopard.