This Is How We Do sounds like a Becky G song.
International Smile isn't much better. Reminds me of Jessie J Domino but doesn't surprise me cause Dr. Luke is know for re-using old material (Californina Gurls + TiK ToK) and the Daft Punk section is annoying but,they song has made me happy a few times.

So, International Smile is the best out of the two, so my vote goes to This Is How We Do.