Just my $0.02 unprofessional opinion:
The recent combat record for T-72 MBT's sucks, because nations that deployed them used earlier or downgraded export variants. In case of Iraq, the "Assad Babyl" was assembled from parts to sneak past the arms embargo from Iran-Iraq war, the finished product was no where near the same level as Russian front-line units with better composite & reactive armour.
Also, the T-72 is a medium tank at 41 tons, comparred to the M1A1 heavy tank at 70 tons. It doesn't need to be said that the M1A1 is better protected with more armour. =/
Yes the T-72 has some flaws. Due to its smaller size, everything is packed in closer. Its auto-loader is inferior to a well-trained manual loader, and ammo is stored with minimal protection everywhere from space next to the fuel tank, up to the turret itself. It's said that approx. 70%-75% of all tank kills are at the turret (utelore can prolly correct me on this), so one hit and it's "jack in the box".
But that doesn't mean the tank is useless. You can improve the tank's survivability by removing ammo stored in the turret & near the turret-ring (at the cost of fewer rounds carried) & add protection to storage areas. If I'm not mistaken the German Leopards also have this issue and store some spare ammo in the turret. The armor can, of course, be upgraded, as well as any electronics system.
Not all nations require M1A1 for their national defense needs. In 2003 Malaysia announced their selection of new MBT, the Polish PT-91M. If we look at Malaysia's neighbors, such as Thailand, the Royal Thai Army is equipped with M-48A5, Type 69 (from China), and M60A3 MBT's. Burma's Army is equipped with T-69-II and T-63 tanks from PRC and some used T-72's from Ukraine. In combat the PT-91M, assuming if the crew is properly trained and not taking a nap (Malaysians love naps), will prolly cream their neighbor's tanks.
(In Chinese)
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