Tapion said:
I don't really see a reason to believe BoG Goku is all that much different from Boo Arc Goku; in fact, I'm pretty sure Toriyama states Boo Arc Goku had reached "nearly perfect" strength in an interview, but fair enough, I guess.
Vegeta stating Goku is the strongest Saiyan and he is the 2nd strongest would definitely point against that. You could say he was only talking about pure blooded Saiyans, but it would be completely redundant for him to do so when the only other survivor in that category to his knowledge was Tarble.
Manga-wise, we also have Goku's image training of taking on Pure Boo in SSJ. Since the whole point of image training is to estimate how an actual fight would play out, I'd say it definitely shouldn't just be written off.
Toriyama did state that, but considering both the continuation of the series and Goku's general standing within the Boo Arc (along with the heavy implications of Base Goku closing in on Pure Boo's level or at least surpassing Good Boo by the End of Z), I'd say that can be counted amongst the many interviews that Toriyama himself has made redundant. After all, in a similar interview, he also referred to Goku as proving he's "the strongest", which would throw a wrench into the far more solid Ultimate Gohan > SS3 Goku for the Boo Arc if taking it into account.
It's also worth noting that Toei seem to be following Kai's continuity based on Bulma's body change with Ginyu on Namek being referenced and Kai still holds the Pure Boo being the strongest Boo lines, so inevitably at least one official source has to be wrong.
