I just read some of the
final parts of the novels and...
There was also no mention of Naruto wanting to prove to Toneri he could sock him with one strike or something like that.
Although, it is interesting to me that Naruto dropped out of Kurama Mode and channeled the Chakra into his arm when faced with Toneri's explosion of energy, which leads me to believe that him concentrating the Chakra into his arm exclusively "increased" his power and defenses; this is not a foreign concept either, as techniques such as the Chidori and Chidori Katana and the Hell Stab are built around the concept of "concentrating Chakra into a small surface amps up your Chakra"; if you distribute 100% of your energy throughout your body, then you have equaled out your power, but if you pool 100% of your energy into, say, your fist, then your fist is utilizing 100% of your power rather than a measly 2% or something.
However, this is simply speculation on my end.