That translation of 'how the Russians see the Abrams' text: "projectiles easily penetrate Soviet armor" - the Leopard 2 has the same Rheinmetal gun (US licences the design from Rheinmetal for production there) and so can throw the same projectiles. No idea if the US might provide depleted uranium sabot rounds, but they'd work. They probably are unnecessary for T72s, and the DU rounds, once fired, represent a hazard for anyone doing whatever in the remains of a tank destroyed by them, so probably both tank models will be throwing tungsten. Just my guess, of course...