In any event, it didn't last as the official religion of that nation. I think his successors turned back to paganism. What King Drtad did, on the other hand, really established a Christian nation.
Salpy, it's not as hugely different as you are making it sound. The Kingdom of Armenia collapsed not much more than 100 years after that, remember?
How does that make what King Drtad did anything less than the establishment of a state religion? All his successors upheld Christianity and even after Armenia came to be occupied, the Armenian nobility who continued to rule the Armenian people on a local level all remained Christian, as did their subjects.
The Armenian people--nobility and commoners alike--died for their belief in Christ, from the time of St. Vartan, to the time of the Genocide. After thirteen centuries of Islamic rule there is no such thing as an Islamic Armenian community. If an Armenian converts to Islam, he's no longer an Armenian. That is how strongly fused the Armenian identity is with Christianity. St. Vartan said that since our conversion we had come to wear our religion as our skin, not as our clothes. Since the time of Drtad, it has been impossible to remove.
How is that not the establishment of a national religion? I'm trying to understand how what King Apkar did was comparable.