The YOR are best at production; statistically their end-tier fac has the highest output. However, in the outplay that might be different, because of other races racial-bonuses, or an inability to use end-tier facs due to lack of $.

I assume in Ground Combat they are good, too (if judging on "Soldering" solely), although I can't say how "Courage" works into this as well (where other races have much better bonuses on it).

The same could be said from speed, where you would have to take "Miniaturization" -(bonuses) into the equation as well....

sorry in advance for making your life more difficult