Anakin has a massive force power advantage, to the point of ludicrousness.
And apparently Anakin's blaster skill isn't all that bad. Plus, I'd assume that Jedi would be naturally more gifted then normal people with blasters as well with the force to guide them and Anakin WTFpwnes Luke in terms of force prowess..so...
Anakin wins. Hands down.
Unless this is a "no force battle" in which case Luke would prolly win. But as long as the force is involved, Anakin will pWn.