The Nasdaq/ICE bid is worth $42.67 per NYSE share, compared with the $35.29 per share Deutsche Börse deal. The two say their offer is worth 21%, or $2 billion more than the current merger on the table, and in a letter to NYSE Chairman Jan-Michiel Hessels, Nasdaq CEO Bob Greifeld and ICE chief Jeff Sprecher outlined why their proposal is superior. From the letter :