Whoever said the Abrams was a great modern tank. Please check your facts it's actually the worst of the modern main battle tanks. The Challenger 2 (Superior armour to the Leopard 2 and the Abrams, and longer range than the Abrams) and the Leopard 2 (Much faster, longer operation range, and a better gun) are both FAR superior and the Russians T-90 is superior in some ways. So please check your facts.
Slightly more detailed comparison.
Abrams is incredibly thirsty for fuel, is a maintenance nightmare, and is quite an easy target to hit.
Leopard 2 is faster, more accurate and has a further operational range and is more reliable than the Abrams.
Challenger 2 is the other way around slower than the Abrams, but more accurate, and over a far longer range (Rifled barrel over smoothebore), also with more advanced armour.
T-90 has it's advantage in it's hull shape, cheapness, and ability to be mass produced if needed. It's also able to shoot Anti-Tank Missiles in the same way it fires tank shells, i'm not sure if the Abrams can do that although I may be wrong.
So saying that the American tanks are just -better- is very wrong.
Slightly more detailed comparison.
Abrams is incredibly thirsty for fuel, is a maintenance nightmare, and is quite an easy target to hit.
Leopard 2 is faster, more accurate and has a further operational range and is more reliable than the Abrams.
Challenger 2 is the other way around slower than the Abrams, but more accurate, and over a far longer range (Rifled barrel over smoothebore), also with more advanced armour.
T-90 has it's advantage in it's hull shape, cheapness, and ability to be mass produced if needed. It's also able to shoot Anti-Tank Missiles in the same way it fires tank shells, i'm not sure if the Abrams can do that although I may be wrong.
So saying that the American tanks are just -better- is very wrong.