Hey is there a seperate board for Advent children?

Anyway, I watched that trailer like 50 times, and I had a few questions

1.) It shows the one fight scene and the end of one of their swords breaks off, is that Sephiroths (assuming thats sephiroth, which im 99% sure it is) (the Masamune) or is it Clouds (buster sword)

2.) Are all of those other characters seen the FFVII crew? Like i think i say barret and Vincent, but i cant be sure

Thanx a bunch