Which Drink is Stronger?

I know this is probably a dumb question, but it’s late, and I don’t feel like doing the math. Anyway, I’ve never drunk alcohol before (I’m 25), and I was thinking of maybe trying one drink this weekend. I was deciding between Buzzballz and Mike’s Hard Lemonade. Buzzballz are 15% alcohol and 187 mL, while Mike’s are 5% alcohol and 11.2 oz. So my question is, which one would be stronger if I just had one? Also, which one would you recommend out of the two?