I would never say that line was "wooden" or "bad". It's simply has a bit more flourish and formality than how normal people would talk. Similarly, you'd never say we'd talk like the lines that Shakespeare wrote or that people in that day spoke in blank verse either, but no one would say it was bad dialogue. Having Anakin and Obi-Wan finish each other's sentences.... well, to be honest, I don't even remember that line in the deleted scenes, so I'm not going to post my opinion on it.