I think it is more complicated. Both sides are consuming huge quantities of cheap artillery, drones, SAM, anti-tank mines and vehicles. HIMARS and smart artille

I think it is more complicated. Both sides are consuming huge quantities of cheap artillery, drones, SAM, anti-tank mines and vehicles. HIMARS and smart artillery shells can make up for differences in fire powers, but only up to a point. Better tanks and IFV increase crew survivability, but they still get taken out of combats by drones, artillery and mines. I'm sure Ukraine air force would love long range AA missiles (to counter the Russian ones) and stealth planes to avoid SAM (but Russians are not using theirs, probably because they suck, but still...).