Technically, Audra has 2 Lead Tonys (1 for Musical, 1 for Play) and 4 Featured Tonys (2 for Musical, 2 for Play). Julie Harris' 5 were all for Lead, so she has the edge.
I'm more impressed that Audra now has at least one Tony for each acting category, Musical or Play. Is this a first?
Salve, Regina, Mater misericordiae
Vita, dulcedo, et spes nostra
Salve, Salve Regina
Ad te clamamus exsules filii Eva
Ad te suspiramus, gementes et flentes
O clemens O pia