Dogs like meat and will eat meat. If there is meat in a kibble and the fat isn't rancid, there is no reason to sugar it up with molassis. I am not sure about Royal Canin or Science Diet, but some of the feeding tests they do, that require that so many percentage of the dogs on the food do not lose more than a certain percentage of their body weights, if the formula fails, they put more molassis in it, so that the dogs will eat more of it.
This is basically why I avoid kibbles that are sugared up.
Again, I am not sure about RC or SD, but both foods are foods that I have looked at in the past and chosen against, I just am not sure why.
I feed mostly kibble, and give hunks of raw meat just as a treat or as an occasional meal in lieu of kibble.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC