MAybe you forgot to read this:
1) He will be Fruitful AND a great Nation.
See, the word "AND" is used here. Yes he is fruitful and a great nation.
Now how would a nation be great in the eyes of God. Were the Assyrians ever a great nation in the eyes of God? Romans? No
How is a great nation defined in the Bible?
1) Have God near them.
2) righteous decrees and laws.
Now you want to disagree on this? == living in denial
This is how a great nation is great in the eyes of God