That's a great conclusion. If all we expect out of George Hill is a better Jacque Vaughn then it appears we have our man! He without a smidgen of a doubt has better defense (by virtue of his 6'9" wingspan) and seems to have a quickness to the rebounds. Which coincidentally, these two skills are a weakness of Tony Parker.
We haven't yet seen his offense, but without a doubt, it must be superior to Vaughn. What that means is that he can make the open shot... or rather make the open 3 point shot. Vaughn could never make the 3point shot with any sense of consistency.
Question then about Mason, who is he an upgrade of?