What's the difference in Jon Renau's 101F48T: Martini and Raquel Welch's RL19/23: Biscuit?

Both Jon Renau's 101F48T: Martini and Raquel Welch's RL19/23: Biscuit look very similar, but are actually very different. 101F48T: Martini is a gorgeous light brown blended with grey and ash/platinum blonde tones throughout and is definitely going to be the warmer of the two. You can watch Heather's color spotlight on this shade: HERE

Now, Raquel Welch's RL19/23: Biscuit is actually a medium blonde/sandy ash brown base with very light blonde (almost platinum) highlights throughout. Heather actually doesn't have a color spotlight on this shade, but you can watch there great review where she really breaks down the rooted version of this shade: HERE (The rooted shade is exactly the same as the un-rooted verison.)