The view that Aristotle in NE held that actions of the moral virtues are 'reasonable' and in that respect similar to philosophical contemplation is an old one, as I said the other day in a comment. For my part, I don't doubt that it's true; I merely don't find it clear.
I cited Veatch's Rational Man as a well-known text in a previous generation that puts forward that view. So I went back to Veatch, to see what exactly he said, and found this remarkable passage, in which he insists that we should take theoretical reason to be secondary to practical!
Aristotle leaves no doubt that he means to distinguish and exalt ...a life of contemplation and thought as against a life devoted merely to bringing one's thought and one's intelligence to bear on one's actions....
If this was Aristotle's position, then we have no alternative but to 'lay hands on our father' Aristotle and to come out in flat disagreement with him on this particular matter. The basis of our disagreement is simply our unshakable conviction that living is not for the sake of knowing, but rather that it is toward intelligent living that all of our powers and capacities are ultimately directed, including our powers of knowledge, and that it is the man himself who counts for more than all his knowledge, no matter how great the latter may be. In short, knowledge for its own sake can never be the be-all and end-all of human existence, nor can the chief good of man ever consist in the mere possession or even the exercise of knowledge. Not in the exercise of knowledge as such, but in its use in the practical living of our lives under the guidance of such knowledge and understanding as we possess must our characteristic perfection of human beings be thought to consist.The lesson I draw from the passage: once one takes both sorts of reasoning, theoretical and practical, to be similar or analogous, then one needs a criterion to place one before the other. And then it seems that: for Aristotle, the eudaimonia of God, and God's being the principle of goodness for the entire universe, serves as that criterion.