  We complete the investigation of loop corrections to hard
spectator-scattering in exclusive B meson to light meson transitions by
computing the short-distance coefficient (jet-function) from the hard-collinear
scale. Adding together the two coefficients from matching QCD to SCET_I to
SCET_II, we investigate the size of loop effects on the ratios of
heavy-to-light meson form factors at large recoil. We find the corrections from
the hard and hard-collinear scales to be of approximately the same size, and
significant, but the perturbative expansions appear to be well-behaved. Our
calculation provides a non-trivial verification of the factorization arguments.
We observe considerable differences between the predictions based on
factorization in the heavy-quark limit and current QCD sum rule calculations of
the form factors. We also include the hard-collinear correction in the B -> pi
pi tree amplitudes, and find an enhancement of the colour-suppressed amplitude
relative to the colour-allowed amplitude.
