If the good guys did reach Berlin first what would the Cold War world look like?
And I know that one of the reason Ike didn't do it was fear of high causalities but wouldn't German forces be more ready to surrender to American and British forces than the Soviets?
The good guys did reach Berlin. They proceeded to destroy the nest of vipers that was the 3rd Reich.
There was absolutely no reason for the WAllies to go into Berlin. NONE. Even if they took half the losses the Red Army did, which is probably optimistic since the WAllies relied so heavily on air power compared to the Soviets, who were far more artillery orientated, the losses would be twice what the U.S. took during the Battle of the Bulge, which was the most costly battle the U.S. engaged in during the entire war, in any theater. 40,000 dead men, be they British or American, is too high a cost for a prestige target.
The post was lines were already drawn, well before the Allies could hope to reach Berlin. The only way to change that is to, somehow, butterfly away
Wacht am Rhein and have the WAllies in position to take the city by early January. Even eliminating Hitler's last bit disastrous leadership in the West wouldn't be enough to put the WAllies at Berlin in that time unless everyone in London and DC decided that taking Berlin was more important tan winning the war.
Berlin was militarily insignificant. The Soviets lost close to 80,000 men KIA/MIA and x5 that wounded for a conquest only to hand 2/3 of it to the WAllies. The effort was idiotic.