Apple Watch Cycling Tests (with an E-Bicycle)

Everything started because it came into my mind a question and I was not able to found the answer on internet, so I decided to find it myself doing some tests. My question was this one:  "Hello everyone,  If I do a cycling outdoor workout with an electric bicycle (who helps you a little bit when you want) should I start a regular outdoor cycling workout or should I choose Indoor Cycling workout to have the most accurate counting of calories burned? Many thanks" I chose the same 4,6K climb path (without descents) / 259m (elevation gain) I used my BH Xenion 27 Lite (electric bicycle) / 20,9Kg. I did the test 3 times: with NO electric help and with cycling OUTDOOR training apple watch workout with TOUR* electric help and with cycling OUTDOOR training apple watch workout with TOUR* electric help and with cycling INDOOR training apple watch workout *my bike offers 5 types of electric help assistance: ECO/TOUR/SPORT/TURBO (from min to max help) but always you mus