I think he meant that the Arcaean Empire needs to be built, not the throne.
A fight between Jenred and Velax isn't impossible, but I don't think it's likely. They had their differences, but Velax was one of Jenred's handpicked successors, after all. Not to mention that the amount of damage the fight would cause would likely cripple any chance either of them could accomplish anything of worth afterwards. Besides...The two of them working together would be much more intriguing.
