🔊 BOOT SOUNDS
POWERBOOK: disc drive goes "vzz-rr-vzz, drrr-rer-urrr." then, speakers go "dunnn...". sounds always occur in the same order with the same timing
ACER: 50/50 chance of complete silence or maximum fan noise. defaults to making a "schwing!" blade sharpening noise, which can be disabled in firmware settings
WINNER: powerbook

🪭 FAN NOISE
POWERBOOK: lovely whirr with a good mix of treble and mids. evocative of the jetsons car noise
ACER: ffwwWWHHHRRRRRRSHHHHEEEEEEEEEEE
WINNER: powerbook

⌨️ KEYBOARD
POWERBOOK: silver keys with those little concave indents for your fingers to rest in. according to a free encyclopaedia (albeit one that anyone can edit), the first laptop to have backlit keys. comforting sans-serif font that gives letter forms so much room to breathe, you'd think this was the oxygen rich carboniferous era
ACER: GAMER black with GAMER font and customisable GAMER backlight. the WASD keys are shaped slightly differently for GAMER purposes. numpad includes GAMER MODE key
WINNER: powerbook

🔋BATTERY LIFE
POWERBOOK: absolutely abysmal
ACER: absolutely abysmal
WINNER: tie

i can't think of any other things to compare. powerbook wins 👍