Is artificially lowering down the performance of iPhones to keep the battery for a day the same thing?
Apple (silently) changed the "failure mode" of batteries from reducing autonomy to lowering performances. Ars shows their power mode as "Recommended", I would guess the observation is a side-effect of that, with the laptop switching from "charged" to "charging" power mode (lowering components performances to charge faster). I saw no note about that, I'd like a re-do with a laptop configured for "best performances".
Of course Microsoft kinda shot themselves in the foot by limiting power input to 100W and designing a laptop with more peak draw than this.