Maybe you just found this, but I made that first comment back on August 5. Even funnier is that I thought you were the guy who posted this at first. I didn't realize you were just another fan until just now! XD
I like that Cloud has a different sword in Advent Children. I consider the Buster Sword to me more Zack's signiture weapon, seeing as he defeated Angeal, Genesis (twice) and fought Sephiroth of with it, plus he took on the Shin-Ra army, killing around three hundred of them. The only significant enemies Cloud defeats with the Buster Sword is Sephiroth, and just once.