It still stands.
Without the US, the Commonwealth and USSR could only hope for an armistice at worst, or a Russian victory at best.
With the US, victory was assured.
And without Russia where would that of left USA and Commonwealth?
USA and Russia (as did Commonwealth) played huge roles in WW2 defeating the Axis. USA provided the material and air force......Russia supplied the man power, and the space to spread out the German war machine.
Would of USA been ready and willing to take all those dead soldiers? Not so sure. I doubt, without Russia, the Allies would of even been able to beat the Axis powers. The real chance they had over the Axis is the possible use of the A-bomb on the Axis cites once it was developed.
AT the very least the USA and Commonwealth would of suffered extremely high loses "IF" they were able to ever defeat them. Again the A-bomb was the only wild card the Allies had that the Axis did not. With the A-bomb destroying city after city the Axis would of had to give it up. But with out the A-bomb the Allies (without Russia) would had a very very very hard time ever defeating Axis powers.
Not b/c they could not out produce them, they could. But they lacked the will to take all the dead soldiers to get the victory. IMO