Reading contradictory or inconclusive things about whether the new optical (non-ECG) hearth rate sensor is better for hearth rate tracking during workouts than in previous Apple Watches... Would love to see tests with a clear methodology, testing the accuracy and, also important, the frequency, of the measurements.
If there are no tests to back it up, then probably your suspicions are correct. It's not better, but apple has the patent on the newer - just as reliable - tech.
Maybe?