Comment by Don Johnson

Peter is one of the 12, the leader of the 12. However, the 12 are 12, not 11, and are not Paul as he discusses himself later. It is not the faithful of the 12, it is simply 12, so the 12 being discussed include Matthias. That is, at the time Paul wrote 1 Cor, the 12 had a meaning that included Matthias and excluded Judas Iscariot.
Paul is in a contest with the false super-apostles. He wants to win the hearts of the Corinthians or at least as many as possible. They say they are better than Paul, he says they are not. I am just trying to exegete 2 Cor on super-apostle. You claimed that Paul is comparing himself to the 12 (eminent apostles), I do not think so in this verse.
On what other apostles claim, the Bible is selective in what is recorded, not everything is recorded. When it is silent we simply do not know, so we do not know what signs and wonders, if any, were associated with other apostles. But the reason Paul makes his claims in 2 Cor is because he is in a context with false teachers.
4. A claim I am making is you used part of Acts 1:22 but not the whole sentence. This is not consistent. If you reject the process of choosing Matthias, it is ironic that you use part of this process to justify your position. To be consistent, accept it all or reject it all; for example, I accept it all as Godly, the 11 were acting in faith based on their understanding after referring to Scripture and prayer, which is all that we can do today.

Don Johnson