Every OEM would tell you no two batteries are the same. One may technically be 103% and another 99%. There is no science to have them be exactly 100%. With that being said, if it showed under 100% at purchase, Apple would have done an exchange.
Edit: for reference, I’ve had mine for 26 days and have 18 cycles. Mine shows 100%. It’s just the luck of the draw.
Every OEM would tell you no two batteries are the same. One may technically be 103% and another 99%. There is no science to have them be exactly 100%. With that being said, if it showed under 100% at purchase, Apple would have done an exchange.
Edit: for reference, I’ve had mine for 26 days and have 18 cycles. Mine shows 100%. It’s just the luck of the draw.