Ryu didn't actually believe that Child of Order was so much better than his Heavenly Pupils. They were ranked number one for a very good reason. But with his eyes sealed, he was certain that the feeling wouldn't have been nearly as transcendent without it.
The second facet was the fact he was in the True Martial World. The Breath of his world and the Breath of Sacrum were on two completely different levels. They couldn't even remotely be compared.
This was, without a doubt, the most potent One With Self state that he had ever entered.
But he didn't have the time to enjoy it.