Patton conquers Korea and China? Ridiculous. First, Korea is not exactly tank country. Second, the U.S. didn't have the logistics or the manpower to launch an invasion of China with or without tanks. They didn't have air supremacy, and Stalin would have been willing to pour in the MIGs with well trained Soviet pilots in North Korea uniforms. The only way to do it would have been with nuclear weapons, and the results for the entire world would have been catastrophic. The U.S. ended up winning the Cold War via containment and I can't understand why anyone with hindsight would give credence to McArthur's go for broke strategy in Korea (or LeMay's let's-roll suggestions during the Cuban Missile Crisis). It's not a matter of BLOOD; its a matter of hundreds of millions dead; radioactive slag; Chernobyl a hundred time over.
As to Berlin, Ike was right. The occupation zones were already settled before the fall of Germany. Berlin ended up with U.S., British and French zones within the preagreed larger zones (and the Western allies had between them a much larger portion and the most industrially advanced areas of Germany). The Soviets had an overwhelming numerical advantage in tanks and manpower, and probably a parity in air power. They probably had the best and most experienced generals. So they could have stood down any Patton fantasy of driving "on to the Oder" (i.e., take ALL of Germany). Indeed, considering that they did the heaviest lifting in the war, and suffered by far the worst casualties, they would not have tolerated a Western attempt to control all of Berlin and deprive them of any occupation zone. But of course it wouldn't have come to that--both sides were too exhausted to lock horns until a few years later.
If anybody's to blame for the Soviets being able to occupy most of Eastern Europe and the future East Germany, it's not Ike restraining a superhuman Patton (who really had a relatively small tank force by Soviet standards--and one composed of tanks that weren't as good as the T-34), it's the U.S. Congress (both parties) in the late 1930s which refused to see the writing on the wall and get the country prepared in time. If our army and military production had been built up sooner (and if the Manhattan Project had been started sooner), the war might have been won with the Soviets still stuck short of Warsaw--and there might have been enough additional resources for Churchill's drive into the Balkans as a supplement to the invasions of Normandy and Southern France. One result would have been less need to placate ex-Nazis and make deals to defend Western Europe. A LOT more war criminals (like every single SS officer without exception) could have been hung as a salutary lesson to would-be war criminals of the future, including those in what would have been a much weaker Soviet sphere of influence.