The Twelve apostles:
Representatives of the NATION of Israel. 12 Tribes/12 men/12 thrones. (Matt. 19:28)
Paul:
Representative of the BODY of Christ. ONE man/both Jew and Gentile/Reconciled (Eph. 2:16)
The Twelve Apostles:
Called by Christ on EARTH. (Luke 6:13)
Paul:
Called by Christ in HEAVEN. (Acts 9:3-5)
Is there a difference here? Can you see the TWO belief systems represented? (Judaism AND Christianity)
Here are a few more concrete differences that will knock yer socks off.
The 12 only knew Christ on EARTH (Acts 1:9)
Paul knew only Christ in HEAVEN (1 Cor. 15:

The 12 were sent to ISRAEL and the nations (Matt:10:5,6 Luke 24:47,48)
Paul was sent to ALL men everywhere (Rom. 10:12 and 11:42)
The 12 were sent to proclaim Gods PROPHESIED PROGRAM which was salvation to the Gentiles through Israels RISE (Acts 3:24-26)
Paul was sent to proclaim Gods SECRET PURPOSE which was salvation to the Gentiles through Israels FALL (Rom. 11:7-33)
Things that differ are certainly NOT the same. Discussion on any of these clear distinctions?