The series completely cast away any form of loyalty to the power scales of the characters. A character capable of destroying the entire universe gets defeated easily by some ridiculous foe. Then an astronomically less powerful character goes ahead and fights a serious fight with that foe. It takes away any exciting expectation one can have for the characters and leaves the viewer entirely confused and disappointed.
Shamelessly beating the dead horse. There's nothing more to it.
Shamelessly beating the dead horse. There's nothing more to it.