I think 2 important factors were left out.
1. What is Data computing? Is it a supermajor equation/problem requiring man, many steps? This will take him longer to finish, obviously, than a simple blink-poof-done equation.
2. What kinda moving is Flash doing? Is it how fast he can run around the Earth, wave bye-bye, file his income tax, what? What distance or action are we talking about?
The above aside, if Flash can exceed lightspeed, then my inclination is to say he wins this, hands down.
A better comparison woulda been this: Flash vs the Enterprise's computers. The ship's computers use FTL nanoprocessors.