My stats: 16str/10dex and 40int/40fth.
This sword requires less dex than the Onyx blade and Claymore.
This sword has less range than the Onyx blade and Claymore, yet features identical AR to the Claymore at 147+26 phys and 154+255 for [583 AR] or [600 AR] twohanded.
It's worth a look if you lack the dex for Claymore, which also happens to require 16str, but you can't make the 13 dex requirement. You could go 14str 12dex and get the Onyx, which has 526 AR, though Onyx has that fire buff, I honestly don't know what is better, that's for you to decide!
Food for thought! If I'm wrong at all, feel free to yell at this post for being wrong!