The Russians conscripted more German rocket scientists than the Americans got through Operation Paperclip, both programs were bootstrapped with German expertise. Americans got ~1,600, Russians more like 6,000.
With fairness to the Soviets, the USSR's reputation for rocket artillery was nearly as impressive as Germany's in WWII. The Allies had less experience scaling and deploying the technology, so they had more to gain by taking in the Peenemünde researchers.