I'll admit that Telltale's personal style does seep through in each game, but to me it's always felt supplemental to each franchise's individual sense of humor. The vast majority of the jokes from SBCG4AP would have felt right at home in a Homestar Runner cartoon, but would have been really out of place in a Wallace and Gromit short. And vice-versa.
I don't know, maybe my frequently-selective memory is only focusing on the parts that felt right in each game. :P