okay. I wasn't implying that one skill equals two tools, either.You can learn languages and tools through downtime training, while skills are limited to races, classes, and feats. But there's nothing that implies one skill equals two tools. In fact, the Skilled feat has you pick skills or tools on an even basis.
I was going with the customizing background guidelines that equate tools with languages, and skills as separate. I maybe should have said that skills are more distinct, rather than stronger.
Although it's exactly because tools can be learned during downtime that it's a clearly stronger choice to take skills over tools at all opportunities (powergaming-wise, at least).