i believe animations are blended to form this numbers, this makes it much smoother, so instead of jumping from keyframe 1 to 2, you will, for example, run 100 keyframes, that provides a much smoother look
looks like if you call dbTotalObjectFrames() / realKeyframesCount, you will find how many keyframes are made for every real keyframe, so if you skip <dbTotalObjectFrames() / realKeyframesCount>, you are skipping 1 real frame, though, i don't think you should step like that, better make it smoother and run from one real keyframe to another through all "blended" keyframes, make use of them