I would not mention it for all of the reasons others have stated above. Just focus on being the best applicant you can be and show what makes you special rather than try to compare yourself to classmates. Obviously in the current admissions climate, you should be looking for good safety options you are happy with, but a 3.8 unweighted GPA is fantastic. A student at the highly competitive magnet school in our town just got into Princeton with a 3.8 unweighted GPA, despite having 40+ classmates with perfect 4.0 GPAs and valedictorian status. Princeton still saw something in her that made them take her over those classmates.
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