Hi! There are actually two factors that I know of that contributes to being qualified to enter Cross Server Great Ninja War. The first factor is your ranking in normal GNW, placing first helps your ranking. However, the second factor is the total power of your group. Only eight groups will be qualified for Cross Server GNW, so those groups who obtained first in Normal GNW as well as the total power of your group will determine the placement of your group in Cross Server GNW.

I know it is a little confusing, but I hope my explanation helps.

~Jib