It means that he's fully human but also fully God.

He lived, breathed, taught, and died as a man, and just as much, lived, breathed, taught, and ascended as god made into mortal flesh.

It's a bit more of that one actor many roles idea I've stated already, he's 100% Jesus the man, and he's also 100% the mortal face of God. It's like how you are 100% your father's child at the same time as you are 100% your mother's child, you don't stop being one or the other or shift between them as you deem needed or fit, you just are both, and in the same way, Jesus just is both.