Partisans are a completely different story because they come with massive trade offs unlike grens which you will build every single game anyways.
Partisans have now vehicle detection, mines, snares and a Panzerschreck. They are a much better AT ambush unit than Stormtroopers with Panzerschreck. AT partisans will easily be able to single handily take out any unsupported light vehicle, and render any medium tank a sitting duck without any supporting AT unit and even without using mines. On top of that they'll be able to keep infantry off with concussive traps and use the stun status to retreat safely
Since we are talking about "real" scenarios Jägers camouflaged and snaring tanks is far from a mine because it needs a supporting unit to connect a penetrating shot and will be easily countered and punished by keeping basic infantry near the tanks. Chances are the Grenadiers at snaring range, bunched up in cover, will get obliterated by the combined alpha strike of the tank and any supporting infantry fire.
Even if your tank is a sitting duck you made the ostheer player bleed heavily and he will keep an infantry squad off the battlefield.
Sorry, maybe I'm being short sighted but I can't see this being a viable strategy