Complex sentence: The current holders who have won the most awards are TVXQ with 14 awards, 3 of them being grand awards and after Super Junior with 14 and 2NE1 with 13 awards, 4 of them being grand awards.
Split into simpler sentences: The current holders who have won the most awards are TVXQ with 14 awards, 3 of them being grand awards and after Super Junior with 14. They are followed by 2NE1 with 13 awards, 4 of them being grand awards.