Meade I am not really familiar with. She displays problems with many modern sopranos. She has reasonable volume, but the sound isn't very pretty at all to me. Both she and the other singer are very nasal and spread. I think she may have a good core voice, but the breath support is inadequate for the breath pressure she is applying and it is a sound with a lot of glottal tension and an overly wide vibrato. If I am unkind I will say they wobble. She does have a fast response instrument, but there isn't enough beauty in the sound for me to enjoy this.
Sutherland makes a beautiful smooth velvety round sound in all her acuti and virtuoso attacks non matter how wide the leap, or how high the note or angular the approach. She simply sounds beautiful, sensual, and stunningly brilliant. The voice is huge, but this isn't why I favor Joan. Anyone can make lots of noise. Joan's breath support is so staggering that she never once seems to scream or yell harshly at any dynamic level. This is the point of virtuoso repertoire, that it sound beautiful and easy in emission, as she makes it. The other one cannot compare.