Paras suppression ability has literally no CD. It can be used as long as you have munition to spare.
Churchill have more than 2 times the acceleration of KV-1 is an inconsistency and not a balance issue.
Obers ability has no cd. It has no cost. Why? Cause they have it passively on their Kar98 and in the case of the IR STG.
You could have made your point clear and without bias, if you said: Look here we have an ability with no cd. Look here we have an ability which is free.
Nope, you just needed to put !! markers on what you wanted to remark instead of making it free for interpretation.
The difference in both is that one is part of the upgrade (1919 giving suppression vs Thompson "Assault") and the other is part of their passive abilities and vet.
You want them to be consistent: make Paras have a cd vs removing suppression on Obers at vet 0, reducing the cd and giving it a similar cost.
If you can't spot the difference between balance and inconsistency I am sorry but I can not help you. Have a nice day anyway.