I highly doubt its a greatsword, most likely a single handed sword...thats how excalibur was portrayed in the stories anyway. Man i have to see what the WS does...if its anything like FF7 then damn thats so pimp!
nope, not a great sword. i know because it's posted on a crapload of sites and i've seen excalibur on two japanese guys now. the final relic great sword is ragnarok.