Xtina's AMAs Whitney tribute very hit & miss

Funny how media are saying Christina Aguilera nailed this Whitney/Bodyguard tribute at the AMAs, because...
...the performance says completely different.

It was a very throaty performance and she was straining when it came to hitting high notes. In general, Whitney Houston songs are hard to sing but once upon a time ago, Xtina use to be able to slay the hell out of 'Run To You.' She lowered the key significantly for each song, and still had issues. Parts of the performance did have its nice moments, but she did a lot better with the hologram set-up. Her voice is not what it used to be, and her tribute underwhelmed. Overall, not a terrible performance, but you can clearly tell she struggles.