All Star Streaks?

Mike Pelfrey has an ERA of 1.38 in his
last 5 starts and is 5-0 during that stretch,
without giving up a single HR

In a smaller sample, Oliver Perez has an
ERA of 0.90 in his last three starts and
is 1-0 giving up a respectable 2 HR's
during that stretch.

So How do you justify that Josh Hamilton
hit 35 HR's during the HR derby and lost
to Justin Morneau who hit 22? There's
something wrong with the the setup if it
can be that big a disparity.