I was very familiar with the original London cast recording and was/am a huge Lupone fan by the time I saw Glenn and company in the L.A. production over at the Shubert.
To me, there was no question that Glenn gave one of the best, most nuanced performances I had ever seen. Her delivery of the lines, whether sung or spoken, was clever and even enlightening, making moments that seemed forced on the London album produce maximum effect where none was expected.
Anyone who has seen Patti as Eva (whether live or on a grainy bootleg) will tell you her recorded performance on the Evita American Premiere album is much subdued. I now know that she had recorded it very early on before she was given time to grow into the character or even develop it, and I had read somewhere that she had just recovered from illness. Whatever the case, her recorded Norma performance is almost identical from what I've seen on videos. I was sort of hoping she'd be better.
What really surprised me about the Sunset American Premiere recording is Glenn--and the entire cast, for that matter-- basically carbon copied their stage performances exactly on the recording. There is usually some variation but it was almost as if it was recorded live. Everything, the way they delivered their lines on stage at the Shubert, every nuance is preserved on the recording, and when I listen to it, it takes me back.
The changes only improved the show, imo. I agree that "Every Movie's a Circus" is a crap number and some of the over-long scenes, like the one at Artie's apartment with the dumb gags about DeMille and hopes and dreams, blah, blah, blah I didn't care for. But as a whole, the changes improved what sounded like a very unexciting show in London.
Recreation of original John Cameron orchestration to "On My Own" by yours truly. Click player below to hear.