Let me expand on my previous point a bit further, so I can ram my logic so far up your bloody a-.
Similar mechanics, let me explain how.
Grab-Release animations are practically the same, Dair's both spike, Bair's both have great range and are reliable killing moves, their Grabs (not DownThrows or BackThrows or UpThrows) but the actual Grabbing animation, and it's startup.
Wolf can't SHDL like Falco, so his options are going to be somewhat neglected when it comes to approaching in that particular manner.
But, they do have similar mechanics programmed into their overall design, although the animations of the particular moves and its effects are what causes differences in matchups and the overall metagame of Brawl. (Hitboxes, priority, range, setups, AT's etc...)
Think more different than Mario and Luigi, Ness and Lucas, but less different than Toon Link and Link. See where I'm coming from? Fox is considerably different in comparision to Falco than Wolf is, although I'm -not- denying even Wolf and Falco are very unique in the specific sense of playstyle and movesets, although they do share broad and general similarities as a result of overall programming.
Both **** Yoshi.