evaluating 1h vs 2h

[Roth]

So let's say in a vacuum I'm a noob and I want to determine what is better here on a rough basis. Let's say you have a 1h with 10/20 ratio and a 2h with 20/20 ratio. If you dual wielded two 1h with 10/20 would your damage equal the 20/20 2h typically? Or is it not that simple?