Complex sentence: Edge in Final Fantasy IV has the Steal skill as well as the Ninjutsu abilities; in Final Fantasy Tactics Advanced mastering skills in the "Thief" jobclass is a prerequisite to acquiring the "Ninja" class.
Split into simpler sentences: Edge in Final Fantasy IV has the Steal skill as well as the Ninjutsu abilities. While in Final Fantasy Tactics Advanced mastering skills in the "Thief" jobclass is a prerequisite to acquiring the "Ninja" class.