I dont think its an issue with the JT. This is the nature of a team game. Good players will always complement eachothers army.
If you play 3v3, and a soviet player spam maxims, the USF player spam rifles with LMG and the UKF player build two 17pounder, then its kinda normal if my volks blob get massacred when i try to get close to the ATguns. It doesnt mean any of those units are OP or broken, it just mean the 3 play complement eachothers army. But where is a tactic, there is a counter aswell..
While players complementing one another is a normal start, it doesn't take into effect that with the currant abilities the Jag is over preforming due to its engine upgrade (negating its slower speed), long range, HE rounds, and piercing shot. It is effectively an arty unit as it can bypass normal terrain issues other than sitting in the bottom of the hill on steppes and firing up. The unit NEEDS a range reduction at
best to match that of other
mobile heavy tanks at 70. The 85 range is over kill and should be toned down to allow for more counter play.
The piercing shot as I state earlier needs to be removed, units such as pack 43 should not be able to avoid terrain Collision due to some special rounds they get, simply not fair and not practical for gameplay balance.
Currently the
only counter to jag tiger is to effectively "hurl"
cheap tank at the unit making it as Imageless bean pointed out "impossible" to effectively trade fairly. OKW will always come out on top with its cost effectiveness.
This doesn't mean the stun is ok, it’s a dumb mechanics that only lasts for 2.5 seconds and only reduces its speed. As others have pointed out a HP reduction is a solid idea as the armor value for it is rather high in comparison to ele even.
TLDR: Match stats with ele (Basically), remove cheese abilities.