As previously mentioned (in other threads), the T-72 is an inexpensive mass-production MBT made for Soviet conscripts & export, while the T-64 was the real heavy hitter that was never exported. At the time US didn't have anything to counter the new Soviet armor, so they pushed the MBT-70 project, which later diversed into M1 and Leopard II MBT's.
Iraqi T-72's were poor copies of old Soviet export models, and cannot be comparred to the T-72's in late Soviet-era service or any modernized vairant today, such as the PT-91 series. Yes the T-72 is inferior to the M1, but they're of different generation and it's like saying F-15 is better than MiG-21.
I think most of us would agree that in modern combat, your tank force is better off being mobile than dug-in at some fixed position, waiting to be bombed. =/
p.s. a suggestion -- can we use "Israeli" instead of "Jew"? Israeli Druze (Arab) are required to serve in the IDF and hold pretty high ranks.