I recently upgraded from the Runner Cardio to the Multi-Sport cardio. And I noticed that the activity summary screen now only shows minutes, miles, min/mile and calories. It doesn't show average heart rate anymore. This is disappointing, as I love to track my average heart rate to gauge how hard of a workout that I had. Why is so much more information available on the Runner Cardio and the Multi-sport cardio in the watch's activity history?