The reality is that there will always be a gap in any kind of human endeavor. Some people are better at math, some people are stronger, some people are born to be musicians, while others are tone deaf. Etc. etc. This fact makes closing gaps unrealistic at best and damaging at worst.
I'm with playandlearn about equal opportunities. I'd also throw in that some minimum basic guarantees in this society would make the gap less of an issue. If everyone had a right to earn a living wage in a job, that would help. A lot. So would having a right to housing, medical care,* and education (well, the public schools address that last one to a large degree, but the price of college right now is ridiculous).
By this, I mean, "medical care that is not prohibitively expensive for anyone."
