For some reason, I calculated my damage range using this formula:
1.5*total_attack*4*(total_luk + total_str + total_dex)/100
I ended up getting only "19686" as my highest damage range.
Here is the screenshot of my stats. http://i.imgur.com/rw0ccMn.jpg
Did I miss any calculations? I don't have any character cards that add in "special damage" and the only character card I have that adds stats is Xenon.