Nate is an upgrade over House, in terms of talent. He's a better dribbler, passer, and penetrator, and statistically, he's not that far off in shooting. He's also an electrifying scorer when he's hot.
On the other hand, talent isn't everything. Nate is a jerk and a punk, and plays a selfish style. There are real concerns about whether he'll be a good fit. However, in terms of talent, I think Nate trumps Eddie.