M'Baku felt troubled. He knew that Taro was strong. However, from this exchange of looks, he felt as if Taro could beat the shit out of a hundred caninos. Although that doesn't prove the claims of his capability to destroy a planet, M'Baku did agree that he majorly underestimated him, and he should be extremely careful around Taro.
Happy New Year to anyone who's reading this on Jan 1 and everyone else as well. Have fun this year.
Cheers!