I believe "The Rocky Show" syndication package is apparently mostly used internationally, whereas "The Bullwinkle Show" package is used mostly in the U.S.
Idon't know much about "The Rocky Show" syndication package (I understand it's supposed to be only 15 minutes long as opposed to half an hour), but I do know "The Bullwinkle Show" package: it was half an hour, and the first two "seasons" (the first two seasons of the entire series) were formatted as one Rocky and Bullwinkle segment, Fractured Fairy Tails (occasionally Aesop and Son), Mr. Know-it-All, Peabody's Improbable History (occasionally Dudley Do-Right), a second Rocky and Bullwinkle segment, and Bullwinkle's Corner; while the third "season" of the package (the last season of the entire series) was reformatted with one Rocky and Bullwinkle segment, Mr. Know-it-All, Fractured Fairy Tales, another Rocky and Bullwinkle segment, Bullwinkle's Corner, and a third Rocky and Bullwinkle segment (which the except of that first episode of that "season", which actually had four Rocky and Bullwinkle segments, with two Mr. Know-it-Alls and a Bullwinkle's Corner). I should also point out that the first two "seasons" only utilized the sunflowers intermezzos, whereas the last "season" utilized those, plus all the "Watch me pull a rabbit outta my hat" ones (except for the only one with the red curtain, and where Bullwinkle pulls Rocky out instead).
But then again, just about all of those classic cartoons were treated weird in syndication: for instance, most cartoons have the end titles redone for every episode of the series, where it basically lists every single writer, every single director, every single voice artist, etc, and so forth. Also, Drtooth explained this once that for a cartoon to be syndicated, FCC only requires a minimum of 65 episodes, so often, these distributors will only purchase that many episodes, which is why in the case of Rocky and Bullwinkle, "The Bullwinkle Show" we never see Seasons Three or Four in syndication, or like in the case of The Chipmunks, their first 65 episodes was five and a half seasons, so there's two and a half seasons that were never shown in reruns.
Oh, and you also mentioned the show on Cartoon Network: they used the same "Bullwinkle Show" package, but they modified it with their own main titles (basically the various different characters chromakeyed in front of a green and purple checkerboard design, with a new title called "The Rocky and Bullwinkle Show", which is odd, because they retained "The Bullwinkle Show" closing credits).