Ha! Glad I did. They are indeed different!
Red Velvet- a bit creamier with a satin finish
Unmistakeable- metallic and after a while, might be a base without a smooth finish for your shadows
top- MAC Red Velvet shadestick
bottom- HiP Unmistakeable crayon
Unmistakeable looks quite rusty red, but it's more of a metallic, rust- pink
The HiP crayon is a bit bigger. Sorry I don't know the net weights.
OK, follow along... not the best example, but I wanted to try:
left base- Unmistakeable
right base- Red Velvet
swatched MAC shadows/pigment from top to bottom:
top- Falling Star e/s
middle- Paradisco e/s
bottom- Milk pigment