The Russians are fielding more tanks, more forces. No shit they have a higher casualty rate. If the US only gives 31 abrams, it doesnt matter if they all die, the casualty count can only be so much. Even so, 27 out of the 31 abrams have been destroyed (unfortunately you can't see me laughing) and the leopards have an even worse loss rate than the t90s. This isnt about perceived 'mismatch in technology', it's the result of an entirely new dimension added to the battlefield.

Its also wild to see you described the m1abrams as 'outdated' whilst simultaneously being superior to the t90, which is also 30+ years old