That is an exaggeration. In 2011 he DOMINATED right handers (.158 .213 .219 against) and his only real problem against lefties was walks. His .230 .356 .331 line against lefties was far from ideal but doesn't indicate a lucky escape artist. Combined with his righty split it shows a guy with relatively unhittable stuff who almost never gives up extra base hits but does walk a lot of left-handed batters.
So yeah, he gave up some baserunners but almost never the big hit that lost the game. In fact, he gave up only 12 extra base hits all of 2011 in 301 plate appearances against. That's about 4% of the time, which doesn't sound much like luck to me.