Supergirl got more time with Superman in her first year than Conner did over his entire existence. From the very beginning, Clark treated her better because she was his cousin and not some stinking clone. She didn't just get the "new kid treatment," she got so much love and attention from Clark that she found it stifling. Conner wishes he could've felt stifled by Clark. Also, let's see, dumping a kid off at your parents' doorstep to do manual labor or bringing a kid to a mythical island of powerful role models who'll teach her to be a nearly unstoppable warrior? Which one do you think is better? Plus, as I mentioned before, he didn't invite her to stay with the Kents or with him and Lois because Supergirl felt like he was stifling her. Conner screwed up and Clark scolded him. Kara screws up--constantly and by doing a lot more damage than Conner ever did, by the way--and Clark tells her he loves her and wants to help her. I can't even believe this is a comparison. Superman was like an angry, patronizing big brother to Conner, yet he's a gentle, loving father figure to Kara. She's got it a hundred times better than Conner ever did.