She loses to all of them, including Tsunade.
Gaara, Ay, and Onoki do not have to be explained. Sakura can't touch Gaara. Ay speedblitzes Sakura. Onoki flies to the moon and summons as huge a$$ jinton to completely erase her existence.
She loses to Mei as Sakura has no way around her acid mist and knowing that she will just charge in like a lunatic boxer, she will die and be melted with a corrosion style smack down.
And lastly, we come to Tsunade who also beats her. Sakura lacks the knowledge and experience to even tussle with Tsunade. Tsunade also knows a whole lot more about her powers then Sakura does her own. Sakura is still ignorant and she lacks resolve. She can't beat Tsunade yet.