Also are you saying Allied vet is straight better, because almost every Soviet vehicle would like to have a quick word, just as an example.
Insane kat scatter reduction from scatter bonus and range increase? Rapid firing su85? Ofc, most of them are bad, but, you know, soviets not exactly vet-empathized faction.
Wait...this is simply not true. At release vet 0 Obers were insane, they even had bonuses against retreating units.
At release everything were insane, lieutenant with unnerfed thompson in unnerfed wc51 most of them all. I were speaking about nerf in a patch where obers got 25% DPS reduction on top of need to purchase lmgs after 6 mounts of OKW dominance.
And volks lose every engagement one on one against allied infantry (idk how it would be in upcoming patch tho), which makes them bad outside of hardcore blobbing. Then upgrades come into play and volks start losing two against one and becoming nothing but cannon folder (which have it uses still, but at that point they can engage only engineers... and enemy tanks, lol).
Plus you comparison excludes most blatant examples like Pershing -50% reload at vet 3 compared to awful kt vet levels or 2 levels of obers vet (1 and 5) which does absolutely nothing but unlocks abilities and one level of vet which reduces damage via suppression (i am not saying suppression is bad, but sometimes you want to kill enemy squads instead of suppressing them). Those levels are basically itching on the cake, which is nice additions to 3 levels of useful vet, but totally not worth entire vet levels.
I can also argue on quickest vet, in my book nothing vets quicker than starting inf with rushed weapon upgrades aka tommies, grens and rifles.
So, most of OKW vet 5 is nothing special and some of it is really bad. And now we come to the ugliest part of op vet like jp4 (on top of possibility to spam predator recloak on vet 5 to have this stupid 2.5x damage bonus with every shot), which should be nerfed without question.
I am sure there would be more op examples to come since changes were huge, but none of them cant be solved with some numbers adjustments.
If Relic ever bring axis infantry vet in line of allied infantry vet, forum would be drowned in allied tears for months.
There is only two OKW units which can semi-reliably reach hight vet levels which actually give them huge influence over the game (STG obers and jp4), meanwhile most vet5 units is far worse than allied vet3 and lose to them in every circumstances imaginable.