(JT's performance now depends a lot on the map). Breakthrough is still a good doctrine but that change definitely reduced its value significantly in comparison with other OKW commanders. Anyways, I believe there's another thread for this topic.
That was one of the main problems with the JT. It was good on every single map, even on maps where it should've been at a disadvantage (urban or forested areas). Its ability to ignore shot-blockers made it OP in team games. It behaves more like the Elefant now, potent in certain environments and when supported.
Not all commanders can be equally valuable, although it should be that way. There are doctrines which can be useful in any circumstance and some niche ones that fit certain situations.
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