I agree but don’t underestimate the Turks. They fight like maniacs also. As to Hitler, the Soviets had MASSIVE U.S. help like trucks etc. so they could just churn out tanks, tanks and oh yeah, some more tanks. Also huge amounts of heavy artillery. If they just had infantry they would have lost.
How much credence do you give that Germany fighting a multi-front war preserved Britain, which later facilitated operational close support to re-take occupied Europe?