I would agree with that because I am in reverse...Neck darker...and I am always told to stick with my face color as well...Isn't that weird how that happens....
I know this answer (as well as the whole thread) is old but... I'm always told to stick to the colour of my neck, which is shades darker than my face. My face is NC30/ NARS Punjab but my neck is at least a NC42 while my torax as well as the rest of my body are lighter than my face.
I use foundations darker than my face (which feels weird) but not too much, and definitely not in any of the foundations that provide more coverage, so I end up sticking to the C4 Face and Body. I love this foundation but eh, I'd like to try others but I don't seem to find a good fit.
For powder my favourite has always been Blot in Medium Dark. But trying to vary things I went to the store twice to try a MSFN and each time I ended up being convinced that a different shade would be better for me, being Medium Dark and Medium Deep.
Even Medium Dark is far too dark for me, as soon as the brush touches my skin I can already see that very dark orange-y tone which everybody told me was completely 'off'. On my own I decided to buy Medium Plus which I couldn't test in the store because I was told it was too light for me, but it's perfect.
It never occurred to me to return the other ones while I still could and now I have 3 MSFNs, two of which theoretically could be used as bronzer/contour, but I just can't make it work for me -- too orange.
Sorry about the rant but ugh it's so frustrating.