Kiba- (Was getting out smarted. lets recap that fight, Naruto was losing at first but after the confusion and Kiba Being stupid he ended up punching Akamaru through sheer confusion)
Neji- (He was low on chakra anyway, while naruto could keep calling on the fox to reimburse him)
Pein- (Once again, no Match for the Fox's Power. Not to mention He had like two of his bodies crushed by Sage Naruto)
Deidara- (If Naruto Would Have gotten close to him it would be over asap, no doubting that)
if kiba had kept his composure naruto would have lost.
neji got arrogant and began toying with naruto which resulted in his defeat, as we all know an active byakugan sees EVERYTHING, including a punch from below. and not to mention in close range combat neji is faster than sasuke,, so y is it that he wasn't able to dodge one punch?
there would have been no fox if hinata had not jumped in when she did. and if the yellow flash did not contain the fox naruto would have killed himself (the nine tails was not only to great for pein, but naruto as well) god realm is the only one that is truly powerful the others are just support.
in deidara's case you state the impossible naruto had no high range vertical moves at that time (in fact he still doesn't) from a distance deidara is probably in the top 3 most powerful ninja. he even wears the scope to heighten long distance vision. and deidara has shown competence in short range combat when he fought sasuke.