Hypocrite, much?
OT: Sakura and Kushina share a few common aspects. They're both hotheaded and violent. But, they don't have nearly enough similar qualities to call them truly alike. The reason why most people say they do, is because their personalities are poorly thought-out by Kishimoto, so you barely get to see any other aspects of their character. Only if you really go deep will you realize they're different. Kushina is confident, decisive and strong. Sakura is insecure, keeps having doubts and is emotionally rather weak. Kushina beat her bullies up. Sakura had to depend on others. Thinking just because they can both be violent, they're automatically the same, is simpleminded and I would advise those people to use logic next time they try to "analyze" a character.
Secondly, I'd say Kushina = Naruto. She said pick a girl like your mom, because obviously she wants Naruto to pick a good girl. Not literally like her. Besides, because Kushina = Naruto, I'd say Minato = Hinata, and personality wise, NaruHina is the better pairing. But is it canon? Nope. Neither is NaruSaku.
I'd say let Kishimoto decide where to go with this instead of tactlessly flaming each other.