So my syndicate just received the daily prize for war, great, another duplicate prize. Maybe there's a chance the prize will stack after all!
Here's the prize already in my inventory and my stats before receiving the prize, notice the 258% armor attack:
http://i.imgur.com/tjTtDVqh.jpg
http://i.imgur.com/zkfRaoAh.jpg
Now here is me receiving the prize and my stats after receiving the prize, and my armor attack has not changed:
http://i.imgur.com/9zjiIcWh.jpg
http://i.imgur.com/M9lHFbwh.jpg
Thanks for the 6k increase in attack stats GREE, I mean, thanks for absolutely nothing.