It's one thing to be an infantry support gun annilator with an insane health pool. It's another to be deflecting shots often from a racken and various other types of weapons.Hence why my solution should be a good and interesting fix.
Tho personally I don't have much of a problem facing one, they are what the British in a whole is, a brainless unit to have. Any moron can screw up with one and it has enough health to support your mistakes..
We really are too focused on it's Health and it's burning capability. It's a unit limited to one and is essentially the British King Tiger in terms of value to the player. Giving it a Flamethrower Damaged Critical is the only thing I can think of that would nerf it in a way that won't remove it from the game yet not be so "Apocalyptic" to the Axis forces, which would now have a Prayer at putting up a defense.
If I had any say in the coding for it, I'd maybe code AT Snares destroying the Flamethrower in this manner.
33% Health and under = 100% Chance of Destroying Flamethrower
34% - 66% Health = 50% Chance of Destroying Flamethrower
67% and above = 25% Chance of Destroying Flamethrower