Yeah, humor wasn't a priority for that generation. The writers could have used the lack of humor to turn Ash into a serious and more powerful Trainer but they made the whole series a vacation for him instead. BW took Piplup's overreactions and antics from DP and spread them throughout the whole cast, at the expense of using that type of humor sparingly. BW also had a forte of lame humor that isn't supposed to be funny but makes me laugh because I'm lame lol. Johto by far had the greatest sense of humor but it produced a lot of fillers :\