I don't think Summoner is a bad job, I just think it's harder to play correctly. I see many, many bad ones, because it's popular, and it's hard. You have to know which pet to use at the right time and how to control it. I know playing on Darkhold the summoner would often forget to order the pet to attack the crystal, so it would just fight the unkillable boss, leaving only DoTs and another DPS to take out the crystals.

Anyway, I'm glad it's different from FF11. It should be, because that's how Final Fantasy seems to work. Summoners have some comparions, but are never the same. Sometimes they even have different names, and do different things in battles when summoned sometimes.