I realise that this is the Clinic, and tactics don't really belong here. However, I would not read that much into either Froome's or Wiggins' statements regarding their goals for the seaseon at this moment.
Wiggins and Froome leaving the opposition in the dark about what their true ambitions are for the year would actually help the team in both the Giro and the preparation for the Tour. For example, in preparing for the Tour, it makes a difference whether your principal rival is the stronger time trialist (Wiggins) or the stronger climber (Froome), while for the Giro, it's useful to know whether your main rival could potentially be holding something back for the Tour, or will instead try to peak for the Giro.
Wiggins and Froome leaving the opposition in the dark about what their true ambitions are for the year would actually help the team in both the Giro and the preparation for the Tour. For example, in preparing for the Tour, it makes a difference whether your principal rival is the stronger time trialist (Wiggins) or the stronger climber (Froome), while for the Giro, it's useful to know whether your main rival could potentially be holding something back for the Tour, or will instead try to peak for the Giro.