130 fuel isn't the same of 135.
How can you guys not understand that jadgpanzer 4 has less pen and counter mediums and tank destroyer but is useless if your opponent get heavy stuff ?
185 pen will hardly penetrate pershing or is2.
A tank destroyer with 220 penetration is designed to counter heavies.
This comparison makes as much sense as grens vs sherman...
a nugget of information you should note is the DPS and range of the IS-2 and pershing in contrast to the KT.. hell even a panther....
although the IS-2 has the armor of the KT it has 13.49(!!!) far DPS and a measly 40 range in contrast to the KT`s 21.55 and 45 range...
the pershing is closer at 18.60 far DPS and 45 range but suffers in terms of armor at 300 armor...
the cheaper panther even compares to these with 16.71 dps 50 range and 320 armor (but of course sacrifices anti infantry capability)
now lets compare the SU-85 and the JP4
28.88 far dps 185 penetration 230 armor 20 rotation rate 5.7 top speed and stealth capabilities(!!) for the JP4
25.48 far dps 230 penetration 160 armor 22 rotation rate and 5.5 top speed for the SU-85
the jagdpanzer 4 with 185 penetration of course isnt going to fare well as an SU-85 with 230 against a KT or a panther... but since the allied heavies either have anemic DPS or weaker armor much of it is compensated... not to mention the fact that the JP4 still maintains the range advantage over the mentioned allied heavies meaning it can still harass the said heavy and drill them with higher DPS (but at lower penetration) than the equivalent SU-85... not to mention its stealth capabilities which are always handy
lastly hard countering allied heavies isnt the JP4s forte with only 185 penetration.. but what it does have is 230 armor and 28.88 far DPS and a romulan cloaking device making it the perfect counter to all allied medium tanks and tank destroyers (except the SU-85 ironically since it can self spot and kite to alleviate the dps trouble)... very much worth the 50 manpower and 5 fuel increase