Those numbers are straight off Diabloprogress so only apply to cold damage specifically. Depending on the proportion of your damage that is not cold, that number changes. If only 80% of your damage is cold, crit chance is already ahead of cold damage ( 118877 dps for 20% cold VS. 125229 dps for 10% crit). The breakpoint is around 90% Cold damage, though someone could math out the exact percentage.
Edit: This breakpoint also shifts depending on the existing cold damage you have. At around +50% cold damage, 10% crit is just flat out better, even with 100% of your damage being cold damage. This is because cold damage is additive with itself, where as other dps stats are increased in value by your added cold damage. +20% cold damage has the same dps value at 0% and 2000% +cold damage, but CC/CHD/AS all increase in value as you gain more cold damage.
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Edit: This breakpoint also shifts depending on the existing cold damage you have. At around +50% cold damage, 10% crit is just flat out better, even with 100% of your damage being cold damage. This is because cold damage is additive with itself, where as other dps stats are increased in value by your added cold damage. +20% cold damage has the same dps value at 0% and 2000% +cold damage, but CC/CHD/AS all increase in value as you gain more cold damage.