User blog comment:Pedro9basket/Battlefield 3 Pre-orders matching Call of Duty: Black Ops sales/@comment-94.99.7.48-20110728134458/@comment-28584497-20110803132556

@Anon below my previous post, Mirror's Edge 2 was supposed to use the FB engine, before production on it was halted.

@Kelleroid, still and all, they're technically the same engine. You can improve an engine over the years, but the base mechanics and legacy bugs will always be there (see id Tech 3/IW tech or Bethsoft's new Creation engine (which is a built-upon Gamebryo engine, which itself stemmed from NetImmerse). Hell, look at the massive difference between Codename Eagle and BF1942, even though they use the same engine as well.

Of course, DICE's FB engine isn't built upon from the Refractor engine; it's a brand-new engine, so as yet it has no legacy bugs.