User blog comment:KidVegeta/Canonicity/@comment-3097771-20101130082822/@comment-3000576-20101130115239

I'll give my view: canon

The fact that Goku wasn't able to transform is due to dramatic effect. Take Bojack Unbound as an example. Gohan should have been able to transform into a SSJ2, but it wasn't until the end he did. Dramatic Effect.