So, a big part of what makes SwiftKey work as well for me as it does is the learning features. I use those features to scan my Facebook / Twitter / E-mail, and it's able to learn how to predict my typing quirks better than anything else I've ever used.
Very possible. I just installed it and started typing as per normal, I didn't do anything special to make it learn my style. Unfortunately the first (and only) two days I used it the output just wasn't good enough. Maybe I'll try it one more time and stick with it for two weeks while exploring learning options.
Is it possible that you skipped that step?