Title says it all. In cases where the dub obviously deviates from the original Japanese version, do you consider these events entirely "non-canon" or just part of their own continuity?
I'm not talking about things like sandwiches rolling down hills. I mean actual plot or characterization differences, like English!Mew (Movie 1) not being a huge bigot, or 4Kids' heavy emphasis on PokéShipping which, if it existed, was much more subtle in the original.
In short, a "separate continuity" would consider, for instance, Satoshi and Dent to be different characters from Ash and Cilan, existing in what amounts to an alternate universe, rather than merely thinking of Ash as "English!Satoshi".
Myself, I have no real opinion on the matter, I'm just curious what the rest of you think.