In a word, no. Patsy had a great voice, but I am of the opinion (and I have heard others say this) that Patsy Cline is ONLY regarded so highly because she died. And there's considerable validity to that, considering that so many of the women in country music who are far superior vocally to Patsy have been completely forgotten simply because they LIVED to a ripe old age.
if you listen to Charline Arthur (who predated Patsy) you'll hear where Patsy got her sound. Also, if you listen to people like Jean Shepard, Wanda Jackson and Connie Smith you will hear much more emotion and soul (if you can use that for a country singer).
I realize I'm in the tiny minority in this opinion, and it isn't that I don't like Patsy (I still have an old album of Patsy's Four Star material that my parents had when I was a baby). I just don't think she had a uniquely original voice nor the singularly best female voice in country music.