Primavera’s headliners tend to vary in size - sometimes it’s stuff like Radiohead, AM, Kendrick, Blur that would outright headline any festival here, but sometimes it’s slightly smaller stuff that could sub or even headline the Other Stage. This year’s three fall to the lower bracket imo, just about.
Although yeah, if Glastonbury have actually managed to pull all those off then that’s mighty impressive.
That Chappell set at Lolla was during the afternoon with no proper clashes, so it was easier to get that big of a crowd. Put her in an evening slot at Glasto and the crowds will be more dispersed.