They each require a different kind of skill to play, its pretty normal to have these large ratings differences and typically the time control you play the most you will do the best in.
Why the differences in my ratings?
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The only reason I don't have high bullet and blitz ratings is cause I never play them
I have come to the conclusion that the 200-point-differences in my bullet, blitz, and rapid ratings indicate my lack of an attention span for chess. Would you agree, or am I just not technical enough for a slower time control? Do any of you have a significant difference in your ratings, and what do you interpret them as? I would appreciate your input on this.