The same player that spent that much resources into LeFH get wiped and it cant recover with tanks fast enough to stop the priest/sexton spammer. So i disagree.
Offensive tactics have an upper hand here, and lots of versatility are belong to allied factions, therefore once axis factions start to get countered, its already gg for them.
if your enemy has already spammed priests/sextons then its too late to try and counter with your own artillery. The Lefh can win but it should obviously lose against multiple opponents.
No, if your enemy has ploughed all their fuel into mobile artillery then you need to push/dive with a tank. Wait for the enemy to make a push of their own and leave their arty spamming friend behind then flank and take them out. I know it often won't work that way and many things can go wrong but that's the general gist of it and is the fastest way to effectively remove a player from the game.
In truth its easier to beat people spamming mobile arty that static as you don't have to attack ground on the unit after decrewing it. This also applies to katyushas/pzwerfers and stukas.