I think Q did well with Picard and Janeway because they were stuffy and 'proper'.
nuKirk would probably like Q and where would the fun in that be?
Good observation. I was just reading an interview with DeLancie in which he states that he realized early on that Patrick Stewart had already staked out Grave and Serious, so DeLancie went for Snarky and Flippant by way of contrast . . . .