>>715124358
>He got defeated by gungans and Younglings.
Because he underestimated them, which they were able to exploit to defeat him.

>He constantly ran away screaming for his life.
Did you forget he ran away in Genddywars too?

>In the 3D timeline, he lost his spine.
Just like how he was in RotS. He was always meant to be an arrogant coward who likes to dab on people weaker than him, but will always ruin away the second someone stronger than him shows up.