The hints given in the thrilling scenario indicate that there is an initial advantage after choosing a faction. The assistance given by the two powerful Ghost Princes undoubtedly surpasses that of the last Anlan Ghost General.
If Alexander cannot find the so-called fourth faction, it's obvious that the other two factions will have an even greater advantage. Even if Alexander does find the fourth faction, having received initial help will naturally give them a head start over others, after the group had made their selections.
"In the choice of factions, the most powerful and popular is clearly the Hurricane Ghost Prince, since he provides the greatest initial advantage.
Next is the hot-tempered HongMu Ghost Prince; as a Ghost Prince with a bad temper, it's easy to see that he would be more dangerous. The weakest, Ghost General Anlan, ends up being chosen by those who were slow to decide.