1-2 hours extra of continuous usage trumps how many times the case can charge them.
I hear you but what are the chances of anyone being with earphones 7 hours listening continuously? I don't even think that is healthy! I personally don't listen to more than 2 or 3 hours without a break! And 15 min break can give me another 3 hours listening. I only charge me AirPods once a week. And the less often case gets charged, more life spam of it. Based on what I have read, buds don't even come close in the battery life to AirPods.