2 Corinthians 10:7
You people are looking [merely] at the appearance of things [or, "You should look at what is obvious!" In either case, it suggests they were misjudging Paul's ministry]. If any person is confident within himself that he belongs to Christ, he should reflect on this again: We are just as much Christ's [servants] as he is.
2 Corinthians 11:5
For I consider myself not to be one bit inferior to those "super apostles." [Note: Paul is referring to his opponents there in Corinth who claimed apostolic authority].
2 Corinthians 11:21-30
I am ashamed to say that we were [too] weak to do such things. [Note: Paul is probably saying, sarcastically, "We are too 'weak' to take financial advantage of people and mistreat them the way those 'super apostles' there in Corinth were doing"]. Yet, in whatever [matters] anyone [there] dares to boast about, (now I am really speaking foolishly), I will dare to boast also.