Celine never deserved to be part of that trinity, let's be honest.
Tea was spilled.
That said, Beyonce has her moments. I think she's just always
ON, which prevents her from connecting to the audience emotionally, but she does have that capability to do so. She's usually performing an act or an idea of what she thinks it means to be expressive but like other aspects of her talents, she's constantly aware and constantly improving:
1+1 (Backstage)
Listen (Live)
Album wise, she's had her moments:
Speechless
Start Over
I Was Here
I Care
She's never really focused or is known for that aspect of her voice, but she's really changed a lot of that with
Beyoncé.
Rocket
Superpower
Jealous
Heaven
I mean, Heaven is simple but it swells and you can hear the ache from her miscarriage all over it.
In one aspect, she's not there yet and I don't think she ever will be. Mariah and Whitney were vocal powerhouses and created an industry of copycats in their wake. On the other hand, Beyonce is very different in that she's the whole entertainer package.
I don't think it's fair to compare, honestly.