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There are a few possibilities here...
Assuming that the ads are in the same Ad Set and have the same audience, it's possible the lower CPC ad is performing better for your target audience -- they might be finding it more appealing. Usually, the CPC is lower if the Relevancy Score is higher (this isn't always the rule, but it tends to be true).
Over time, Facebook will pick the best performing ad in an Ad Set and start showing that one more.
What is the Click-Through Rate and what is your Reach? This might give you a better idea of what is going on...
However, you only have 60 clicks total. That's not a lot of data to make a decision just yet.
Hope that helps!