One's a UK date, the others are not. I'd stay out of this anyway since Gaga's dates so far grossed more than Rih her Edmonton and Atlanta dates (it's already impressive that Gaga can gross so much after her underperforming era unlike Rihanna who had to give away 10 dollar concert tickets after the Rated R era).
Its also impressive that Rihanna has remained relevant for more than 5 years.
