Well, that sums it all . But he's not always lucky. Like getting shot from a cannon to Hoolefar, framed by Klunk, and killed by Azimuth (Clank saved him later, though)
Well he was shot out of cannon at his objective, and survived just fine. And Ratchet never really got framed by Klunk, that was all a TV show. And finally the Azimuth incident was completely prevented by Ratchet's very own guardian of time. Not many characters can die and live to talk about it! I'd say Ratchet is a pretty lucky character.
And what on earth is Drake syndrome?
Nathan Drake from Uncharted is an incredibly lucky person. I always considered his power to be the power of Hollywood, which is effectively the same as luck, but with way more close shaves and one liners.