hector vs datastax batch performance

gistfile1.txt

// hector version
    val mutator: Mutator[Composite] = HFactory.createMutator(ksp, CompositeSerializer.get)
    val column = HFactory.createColumn(deviceId, Array[Byte]())
    column.setClock(clock)
    profiles.foreach { p =>
      if (p(attributes))
        mutator.addInsertion(rowkey(brandCode, p.id.get), columnFamilyName, column)
      else
        mutator.addDeletion(rowkey(brandCode, p.id.get), columnFamilyName, deviceId, StringSerializer.get, clock)
    }
    mutator.execute()

// datastax version
    val batch = QB.batch()
    profiles.foreach { p =>
      val pid: java.lang.Long = p.id.get.asInstanceOf[Long]
      batch.add(if (p(attributes)) {
        QB.insertInto("profile_devices").
          values(Array("brandCode", "profileId", "deviceId"), Array(brandCode, pid, deviceId))
      } else {
        QB.delete().all().
          from("profile_devices").
          where(QB.eq("brandCode", brandCode)).
          and(QB.eq("profileId", pid)).
          and(QB.eq("deviceId", deviceId))
      })
    }
    session.execute(batch.using(QB.timestamp(clock)))