[hidekirby]

I also don't really understand the "bad vocals" comments... And I'm usually the one complaining for them.

Both performances are quite fine IMO. Of course the cute voice in the beginning of DaD is ruining it a bit but I think she felt it was a safer way to start the song. Then she gains confidence and she sounds more natural.

Still it's a great improvement from a couple of years ago.
She is not going off key, she is controlling her voice, not screaming everywhere and sounding flat...

Yes, it's not her most energetic performance but there is no audience and I'd rather have her sounding that fine than running around the stage and sounding bad. I feel she is behaving like that because she is more focused on delivering good vocals.