No, MBT is not "a better term" it is the correct term. That is what literally every single military professional has used since the 70s.
You have no real grasp on Russian or NATO military capabilities. Poland, Romania, France, and the UK are absolutely filled to the brim with doctrine specific high-mobility ATGMs, including TOW-2Bs, Hellfires, and Spikes, all of which would handily eat Russian tanks for breakfast. The Russians, at current strength, would have extreme difficulty invading NATO, and would likely be stopped at the Vistula, according to NATO defense planning. You also seem to forget that NATO air power literally dwarfs Russia's by orders of magnitude, and the quality of the jets is also far superior. What is Russia going to do against F-35s slick loaded with HARMs? Absolutely nothing besides get their IADS fistfucked. After the IADS is dead, NATO begins aggressively dismantling Russia's C4ISTAR. within 4 weeks the Russians are incapable of organizing above the battalion level. Did you know that Iraq had the fourth largest tank force and third largest IADS in the world in 1991? Not monkey model shit either, high quality equipment purchased by Russia, with operators trained by Russians. Within 3 days the United States had dismantled Iraq's C4ISTAR so completely that divisions at the front were unable to communicate with the government in Baghdad.