It's not so simple Francie. Look into the meat grinder that was the Eastern front. Look at the sheer volume of men and material Hitler lost in the East, division upon division, look at the same on the USSR side.
Compare that to the Western front, a shadow, the poor relation late to the party. The Soviets had already defeated Nazi Germany when they turned them at the gates of Moscow, and were pushing them West encircling and destroying entire Armies.
Stalin, lovely guy that he was, had a legitimate gripe that the Western allies delayed the start of a second front, so the USSR could pa