Although my Loki does well in battery I get just over half the playtime in some lightweight games compared to the deck, like in Balatro or Peglin I get 5-6 hours on the Loki, 9-11 hours on the Deck OLED
Yeah to me, SD is king purely for the battery life performance. If I'm going to be playing handheld, I want at least decent battery life, otherwise I'd play on my desktop. And of course, travelling, battery life is a must