This is not a battle thread.
The truth is that Superman would win no doubt.
But the result is not as one-sided as people make it out to be. The reason is because I would say that Goku's speed is comparable to Green Lantern's usage of his ring. As in, the speed at which Goku uses IT in battle is the same at which GL uses his power ring: The speed of thought. Now arguably, Goku possesses more destructive power than Lantern due to his ability to easily blow up planets with energy alone (Although, I'd bet Hal Jorden can make a massive drill construct to drill into a planet's core to blow it up if he wanted to...A lot of Green Lanterns have done incredibly crazy things with their power rings).
Since Green Lantern can stand somewhat of a chance to beat Superman, I'd argue that Goku has the same chances as well. At any rate, Goku would be a massive asset to heroes/JLA in the DC universe and he would be around the level of a top Green Lantern.
What do you guys think? Any objections or agreements?