We still dont know if she had simulated yellow sun in her ship and so far she has been shown to be strong, resistant to temperatures, and have heat vision. I dont think they showed her more powerful then Kal and they showed her running but not super humanly fast. She even got hit but one of the shots while running. I dont think they portrayed her at all being more powerful than Kal.
Agreed, and the comparison was to ACTION COMICS SUPERMAN, and not JUSTICE LEAGUE SUPERMAN.
I'm sure that JLA Superman is more powerful.