Gaga and Beyoncé are at her level in therms of talent and a little bit in acclaim. Sales might not, but Gaga's and Beyoncé's impact in music >>>>> Adele.
Nope, because they're mostly inferior. Their Stan's come here and proclaim that they're the biggest stars on the planet, but most of them can't even see their albums go double platinum. If you're that big then sales if your product should dominate, and that's usually far from the case when it comes to their albums.
Adele is the most successful pop star in the world right now.
Adele has the talent : So is Gaga, she can dance while singing and knows fashion.
the personality : So is Gaga
the acclaim : People think gaga was the closest to Madonna, Madonna > Gaga( This is the highest compliment in show business ).
the sales : Gaga sold more records than Adele.
So, better. this thread is self clocked/clock, whatever you called it.