The PS3 did not launch in the world climate we have now! everyone is feeling the pinch so i would say it's doing well indeed.
Regardless its not doing well as it should or needs to be at this point. That chart doesn't in the least indicate its doing well because it isn't.
Agreed
I think Destiny will also be announced either in an upcoming ND or at e3. Other big multiplats hopefully Ninty can announce through ND but it's entirely up to the publisher. Ubi didn't announce WatchDogs for Wii U before because Sony was giving Ubi part of their reveal keynote, and probably negotiated to have it announced for PS4 first.
I would be very surprised if Destiny comes to the Wii U. Even if it does it will be long after its been released on the other consoles. Activision isn't entirely happy with the Wii U sales and I don't see Bungie jumping up and down to do a Wii U version which Activision would have to agree to finance in the first place.