[sigzero]

Are you deliberately misreading the linked page?

  Most Widely Deployed and Used Database Engine

That last part is rather important.

[firebacon]

No, I'm referring to the second section.

> MOST WIDELY DEPLOYED SOFTWARE MODULE OF ANY KIND? -- SQLite is probably one of the top five most deployed software modules of any description. Other libraries with similar reach include: zlib... blah blah blah

It stops just short of claiming it's the most deployed software in the world...