I'll start with this one from HSDS:
乾坤大挪移神功較淺近的一二層,類似於“四兩撥千斤”之法,但到了較高層次,反過來變成了“千斤撥四兩”, 以近乎千斤的浩浩內力,去撥動對手小小的勁力,似乎是“殺雞用牛刀”,但正因用的是“牛刀”,殺此雞便輕而 易舉了。
The more basic one or two levels of QQDNY, were of the '4 taels (~200g) moves 1000 catties (~600kg)' variety, but progressing to the higher levels, it reversed into '1000 catties moves 4 taels', using nearly a 1000 catties of torrential inner power, to move the opponent's tiny force, it was like 'killing a chicken with a cow knife', but because it was using a 'cow knife', killing this chicken becomes trivially easy.
So... the higher levels of QQDNY were all about overkill.