"Racial" differences are almost exclusively environmental (climate, food sources, not "nurture"), equipping those who evolve their to thrive in said environme t.
So no, all "races" aren't equally "equipped", but will tend to be more successful when in their evolutionary environment.
Intellect aside, as arguably the most potent genetic difference between individuals and largely due to the fact this is the wellspring of our ability to dominate the natural world. Largely negating evolutionary adaptations to a given environment.
Doesn't matter how heat/sun adapted you are if I have air conditioning for instance.