The USSR should not be considered a "victor" of WWII because they did not choose the Allied side, it was chosen for them, and most of the suffering was a consequence of Soviet leadership, while the ability to resist the Nazi invasion was due to incomprehensibly large amounts of supplies from the Allies.

"USSR won WWII" is from the imaginary world of Russian nationalist speechifying, where the Nazi-Soviet pact and Allied aid are taboo to mention.

And India...India achieved independence due to WWII, so who says they weren't a victor?