There's no comparison. Chess has a far narrower ability range than shogi. The strongest players at BrainKing are around 4th dan amateurs. That's below 6th kyuu professional. Professionals need to score around 80% in a continuous tournament to be promoted from 6th kyuu to 4th dan. Likes of Habu could be expected to win a reasonable proportion of games against BrainKing's strongest players giving a two piece handicap.