I have a vivoactive HR and my wife has a vivosmart 4. There is always a discrepancy in the number of steps taken when we walk the exact same route. Likewise, we are both the exact same height, so stride length shouldn't be an issue.Is there anything I can do to correct this imbalance? She previously had a FitBit model that always showed less steps than mine, so we switched to the Garmin to correct the issue. As well, on a recent walk one of use wore both watches and it still credited mine with more steps.