They are better because simply they are better. Maul comming back, savage, ahsoka.... i mean come on the EU doesnt even come close.... its like comparing a baby picture book to the greatest novel of all time. And to be fair, anyone in the galaxy, including sidious or whoever you think is the strongest, would have lost being surrounded by 100's of gungan warriors. Also, dont underestimate the gungans. They are big, athletic, and good warriors. Jar jar was a cluts, the other gungans are nothing like that. theyre a warrior race.