Again read my other post during Gulf War Iraq used mostly Chinese Type 96 tanks, which are always confused with Russian tanks, the T-72 was that the Iraqi Republican Guard used was not a T-72 but an Iraqi tank. The Iraqis had no thermals on their tanks and as a result many were destroyed at night. Furthermore, Iraqi gunners were very poor, they often failed to get shot off in time. But it does not matter, most tanks they used were not Russian.
Also throughout the Arab Israeli Wars the Israelis lost hundreds of 'Western' tanks to Soviet T series tanks. Although to be fair the Israelis destroyed more T series tanks than visa versa. There are several factors for this, firstly some Israeli tanks were able to lower their canons just enough so that Israeli tanks could get the T series tanks in their sight but still be hidden behind sand dunes. However, many T series tanks were destroyed because they had no cover from sand duns. Also, Israeli tactics were superior to those of the Arabs, the Israelis often attacked Arab armies while they were blinded by the sun.
The battle of Battle of An Lộc has also seen western tanks go up against Soviet, the number were 27 Soviet tanks destroyed v. 30 US tanks destroyed. South Vietnam also had Air support.