Why and how is Supergirl stronger than Superman?

Is it because Superman exercises more restraint?Why and how is Supergirl stronger than Superman?Typically he is depicted as stronger



if you are referring to Kara and Clark on Smallville, it is because she was raised on Krypton and trapped in stasis, so he passed her in age, but he was raised on earth, and is unsure of his limits, and hindered by an illogical and unfounded fear of heightsWhy and how is Supergirl stronger than Superman?She has the power of the NAG NAG NAGWhy and how is Supergirl stronger than Superman?Many characters in the DC Universe have noted that Supergirl appears at times to be even more powerful than Superman. However, as Superman himself explains, this is because he has spent a lifetime subconsciously suppressing his powers so that he doesn't hurt the people around him, while Kara, without such experience, simply uses her powers to the fullest without being as fearful of risks to others.