Gilchrist is a legend wrote on 05/11/12 at 20:43:29:
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My ICC 5-minute rating is 2383, 1-minute rating 2345, blitz 2738 (inactive for years), 3-minute rating 2147, and my FIDE 2254...I am sure premove has helped me to get those ratings, and there is no premove in over-the-board. I am a terrible blitz player, especially over-the-board.
While I do agree that OTB blitz is different from online blitz in large measure because of premove, your 5-minute and 1-minute ratings are impressive.
Or do you suggest that your 3-minute rating is more legitimate because it's lower?
No, all those ratings point to a certain skill level, especially at blitz chess. For those who don't know, those ratings put you in the top 100 or so in 5-minute, 1-minute and 3-minute ratings.
Of course, ratings aren't inflated or deflated just because they are online or OTB. A great deal depends on who your competition is, not just how or where the calculations are made.
Again, congratulations on your excellent ratings. They are things to be proud of. And yes, I do believe FIDE ratings are more important than other ratings. That doesn't make the other ratings false or illegitimate though.