[Spoilers] Confirmed: Minato isn't good at using Senjutsu

[Lagadatte]

What REALLY bothers me is not Minato's Senjutsu, but his ability to talk while having a kunai in his mouth xD Now THAT'S some crazy skill yo

 

[sLm]

Which proves that Pa's words were not at all related to Minato's senjutsu, as expected xD.

Funny, however, the speed at which he turned Sage Mode on.