For those interested in browser differences, on my machine:

Firefox

  AoS: 2951.00ms
  SoA: 1624.00ms
  Interleaved: 1961.00ms

Chrome

  AoS:         2133.30ms
  SoA:         884.30ms
  Interleaved: 1457.60ms

Seems the interleaved being slower is consistent across browsers!