In mid-2017, Chrome has finally gotten their act together on Javascript – benchmarks shown below are on a Nexus 6p:
Read the official Google followup as well … all of this went into the Turbofan and Ignition release in Chrome 59.
Combined with the snapdragon 835 we’re finally entering obama-not-bad.gif territory, where a recent Android device (90ms) is at least in the ballpark of an iPhone 6s (60-70ms) when on Chrome latest, currently 59:
