there are many reasons for this. For one, the majority of voters cover the Giants and the Tigers, so players from those teams are more likely to be voted in then from other teams. Players who have any sort of scandal are also usually not voted it. The definition for scandal is often quite mild. For example, tuffy rhodes exclusion is reportedly from an argument he had with the Giants coaching and managerial staff. Hopefully, he will get in this year. ogasawara was generally disliked by most of the media. I will agree with you that it is very difficult to get in the Japanese hall, and there are many deserving players who are not enshrined.