It was makeupforlife that got me into BB cream what feels like ages ago, and I remember reading that review when it was originally posted and feeling disappointed that MAC had apparently dropped the ball. But it seems like they're trying to make it a different kind of product than the traditional cosmetic BB creams.
MAC making their product very sheer makes sense for their goals and customer base, a traditional BB cream is NOT going to work for anyone a NC40 or above, for some brands 35 may be pushing it. They're thicker and provide a lot more coverage than the MAC one seems to. A traditional BB cream looks pretty yellow toned right out of the tube, but when you spread it on your face it does look a little pinky (depending on brand), however that will resolve once it settles. The idea is that it brightens your skin by balancing out any sallowness that the yellow is bringing. It takes a few minutes to totally settle/sink in but it WILL settle and look like a brightened yet natural you if your skin tone is within the range that the product can work with. I don't even put it down my neck since I bring my moisturizer down anyway, and have never had a problem with color not matching. There are also primer products specifically made to be used under BB creams now, called BB Boomers, but I haven't tried any of them yet so I can't speak to what they're like.
Most of the time I wear a BB cream instead of foundation. I'm pale and pretty yellow, and it really brightens my face, is really moisturizing and makes my skin feel good and pretty balanced no matter what it's doing, my skin has been clearer since I've been using it, it has helped fade some (in fairness, pretty minor) scarring, and it never sinks into the pores that I have on my nose and on my cheeks close to my nose but in fact does a decent job hiding them. Since I'm not a morning person the fact that I get all this from one product that I put on with my hands in less than a minute is a miracle. So if you can't tell, I love BB cream. There are still several I want to try, I don't see myself buying the MAC product though.