Having tantalized us, Corra, will you please tell us what that's from?
What is a strong start? What does "Most Valuable Player" mean? Valuable in what way?
A start can be strong in many ways. It can make us curious about a character. It can create a personal or global jeopardy. It can convince the reader that the writer has something to offer. It can make the reader curious about what is to follow. It can be the voice of a first-person narrator that makes the reader wonder what sort of story this character will tell. (Think of the opening of Huckleberry Finn, or of the best of the hard-boiled first-person detective stories.)
Dorothy Sayers does not begin with a knife and a corpse. Neither does Agatha Christie, nor John Dickson Carr. I'm thinking right now of the opening chapter of Ellery Queen's Double Double, which sets up a strong (strongly-drawn) character, a strong reaction, and a strong character axis, and thereby creates multiple levels of jeopardy that unfold through the story.
The very literary P. D. James generally begins with her detective character. So do many 'lesser' genre writers.
Wilkie Collins begins The Woman in White with the description of a woman (not the woman in white). There's a subtext that runs opposite the written word, and the reader feels it personally rather than judging it.
So do we measure 'strong' by how lurid it is, or the horrors it creates, or by the wonders it promises, or by how well it convinces the reader to invest time and caring in the story that follows?