Given that Christ is fully God, in that his divinity is absolute. The essential requirement of any religion that claims to be Christian, as religions that deny it are not Christian but a religion that denies Christ's humanity is still Christian:
Could it be that the disparity of terminology between EO and OO theology are two sides of the same coin, the priority and primacy of Christ's absolute divinity in relation to his humanity?
In EO theology this is realised in the second person of the Trinity and in OO theology in the incarnate nature. Regardless of what is affirmed about Christ's humanity, ether as a nature in and of itself hypostatically united in the Divine Person of the Son or as united without confusion in one divine nature.
The solution is that Christ's humanity is united with his divinity, in his divinity because Christ's humanity is fulfilled by his divinity, because Christ is absolutely God. IMHO