As I understand it, there is no difference in having options for Japanese players as opposed to drafted American players. Everybody gets 3 (or sometimes 4) options.
What I don't know, is if Wada insisted on a clause in his deal which said the Orioles could not option him without his consent, essentially superceding the option system, or similar to how a player with 5+ years of service cannot be optioned without consent.
I thought I had heard something to this effect, that Wada couldn't be optioned without his consent.
Rick, it looks to me like everyone on that chart with "options" color coded in red mean either those options are burned (those show the dates the options were used) or if there's no date, they just don't have options. If you look at the guys with the color code green and the letter "O" in the option column (Flaherty, Hoes, Machado, Schoop, etc), I'm guessing they have options.