Although both WWF and WCW featured talents who had worked for both companies , wrestlers such as Stone Cold had their greatest success in WWF and were seen by fans as WWF wrestlers . Kurt Angle had never wrestled a match for either WCW or ECW , but was a main player for the Alliance towards the end of the storyline . Austin , who had worked as a mid-carder in WCW and ECW but had found his greatest success in the WWF and was seen primarily as a WWF wrestler , was pushed as the leader of the Alliance and a more important player during the Invasion than the bona fide WCW or ECW members of the Alliance .