"All humans are equal!"
Not enough. I don't understand this, maybe because I don't believe that everything is subjective. I'm not going to use the whole entire world for comparison but let's imagine a situation (unrealistic and probably taking on the black and white mentality to a level but hypothetical for a reason) where we were forced to kill one out of two people - one, ability-wise, is horrible at everything and another perfect at everything. Wouldn't we choose the one who happened to be... perfect at everything? More potential to help both themselves and others, while the one horrible at everything doesn't.
I would take other options: turn around and kill the one who forced me to choose one of those to kill, or I'll beg him to kill me so I won't have to deal with guilt for the rest of my life!
However I can get your point, I think people tend to be more sympathetic towards those civilized and educated or even famous ones, it might be because the education would make their emotions and attitudes more refined and noble and wise than uneducated people, although education is not limited to school, I've yet to come to learn a lot from people who didn't receive proper education but have understanding of life more than many of those with college degrees..
I can think of another painful but true comparison is a human and animal deaths, we know that both are living beings, both experience the same fears, both want to live as bad as the other, but yet if you see a dead animal in the street you feel bad and sorry for him then meh.. You move on, on the other hand, if you see a dead man in the street you call the police and there will be investigations and legal status and issues etc.. Why is that? The difference I see between the two beings are brain and utility for the society..
That's why I think education enhances the value of the individual himself, and an educated nation would subsequently have higher and more valuable status by international standards..
All in all, I think equality is a subjective concept, therefore I believe in justice rather than equality..