Albert Barnes on 2 Corinthians 11:5

For I suppose, etc. I think that I gave as good evidence that I was commissioned by God as the most eminent of the apostles. In the miracles which I performed; in the abundance of my labours, and in my success, I suppose that I did not fall behind any of them. If so, I ought to be regarded and treated as an apostle; and if so, then the false teachers should not be allowed to supplant me in your affections, or to seduce you from the doctrines which I have taught. On the evidence that Paul was equal to others in the proper proof of a commission from God, 2Cor 11:21, 2Cor 11:22-30.

(a) "I was not" 1Cor 15:10, 2Cor 12:11 (*) "whit" "in nothing"