Russian equipment is much more affordable by us.
and im sure many of you think "But russian equipment is inferior to american. Just look at israeli-arab wars and US-iraq war". There are several reasons for those losses.
Lets start with the tank battles:
Lots of channels,including history channel,show lots of pro-western "documentaries". They focus too much on arab mistakes and they "forget" that israelis made huge mistakes too who resulted in large casulties.
Second,The training/crew is more important than the tanks. History have poven this sooo many times (not only in tanks,but also in small arms,planes etc). The isrealis/westernes was much better trained than the arabs.
Third,Soviet used to export only downgraded models (whom they called Monkey models) to the arabs. Their own tanks had much better guns,armours,MS,NV,ammo etc. Some even had Gun fitted ATGMs.
Fourth,The leadership and inteligence. The israelis used much better tactics (many of them focusing on outflanking the enemy,meaning attacks from behind/side,where the tank is almost armourless) than the arabs and had much more information of where their artillery was hidden,tanks were attacking from etc,as they had better inteligence.
The iraqi army was capable of only set-piece operations at brigade level,while the westernes could move whole divisions very fast. (which was very new for iraqis)
5th (Goes for iraqi "T-72"): They were HEAVILY downgraded from the already downgraded T-72M,while the americans used Abrams (3rd generation tank) and Heavily UPgraded M60s,even the kuwaities used M84,a yugoslavian bulit T-72B (T-72B=upgraded T-72)
6th air supiriority: The western forces had complete air supiriority and dropped bombs equal to 10 atomic bombs over iraqi forces.
in 1967 isrealis dropped tons of napalm over egyptian armour in the sinai.
i could go on on reasons in history,but i wont. i will compare the T-90 to abrams.
Mobility and crew comfort:
The speed is questionable,as some sources claim the abrams can go in 42MPH,while others say 35MPH.
The T-90 goes in 40MPH.
The T-90 have better operational range (260 vs ~370). The Ground Pressure of T-90 is also lower than M1A2. The T-90 is smaller,which makes it harder to detect/hit. However,the M1A2 faster in reverse and have better space for crew (but have 4 crew members,while the T-90 have 3,as it have an auto-loader). T-90 also have a limitation on hight of crew members (As the tank is small). But thats no problem for kurds,as many kurds are short

None of the tanks have passenger capacity,like the Isreali merkava have.
Firepower:
The gun of T-90 is larger than that of the M1A2 (125mm vs 120mm).
The T-90 have a capacity for more tanks rounds in it than M1A2 . The M1A2s coaxial Gun fire faster than the T-90s AND have more ammo for it. The M1A2 also have better gun elevation.
But the T-90 have a MISSILE capability (AT-8 songster),something the M1A2 dont have.
Protection:
The M1A2 have flamable fuel,something the T-90 dont have (the russians learned from past mistakes)
The T-90 have APS and ERA and an escape hatch.
The T-90 uses: Laminated RHA Steel,Quartz Gravel,Applique
M1A2 uses: Laminated RHA Steel,DU
The M1A2 have Blow-off Panels.
Stealth/suprise:
T-90 is much smaller and weight 2/3 of the M1A2. T-90 have landline cable jack and Tank to infantry Telephone.
Both have APU and TIS optics.
T-90 have longer operational range as i said.
Both have night vision.
The T-90 is better for suprise attacks than M1A2.
Other:
M1A2 uses 8 times more fuel than T-90.
the T-90 have a 400rds tube life,while the M1A2 have 150 (kind of uncertain about the M1A2s,tough).
there is a little more M1A2s bulit than T-90.
When injustice becomes law, rebellion becomes duty.