Shippuden Sakura Haruno
"envy is at least as strong as sakura and has his shape-changing ability. All he has to do is turn to saskue for a second, make sakura hesitate, and then murder her."
What monsters larger than Envy has she beaten with a single punch? I think you gravely underestimate Envy. If Sakura had amaterasu maybe I could give it to her but all she has shown a talent for is hand-to-hand combat and healing, neither of which is going to make her burn through all of Envy's lives without him getting her once, especially in a 1 vs 1 fight. The only normal humans to hold their own with Envy are ones with magic abilities that Sakura has never shown herself able to do and outnumbering him.
" @sickVisionz: She beat up mosnters larger than Envy in with a single punch. Also her speed is obviously over Envy. Even people with peak human speed and agility could fight with Envy without getting killed. I give this to Sakura. "