The only reliable strategy for OKW in 2v2's is to get fusiliers and volks.
I've tried literally everything else with every other commander. Nothing is more reliable than that because RNG doesn't screw with you when it decides that your 4 man obersquads needs to be instakilled by a stray HE round from a sherman.
Plus, Jagdtiger is like the sole counter to churchill crocodile unless you want to suffer.
