Australia vs Papua New Guinea

Australia's $2,718/mo monthly cost (across 12 scored cities); Papua New Guinea has no monthly cost data yet — not enough data to call a winner.

Australia's 3.7/5 safety score (across 12 scored cities); Papua New Guinea has no safety score data yet — not enough data to call a winner.

Australia's 2.7/5 mobility score (across 12 scored cities); Papua New Guinea has no mobility score data yet — not enough data to call a winner.

Australia's 3.6/5 culture score (across 12 scored cities); Papua New Guinea has no culture score data yet — not enough data to call a winner.

Australia's passport reaches 119 destinations visa-free to Papua New Guinea's 45 — Australia opens more doors without a visa. Passport strength shifts over years of naturalisation, not months of planning, so it's a long-horizon footnote — not scored in the tally.

Between the two, Australia is better connected — 148M passengers/yr vs 1.4M passengers/yr. Australia is busier than 71 of 87 countries worldwide; Papua New Guinea is quieter than 84 of 87 countries worldwide. Australia sees ~6 air passengers per resident a year; Papua New Guinea sees ~16 air passengers per 100 residents a year — a derived figure, not itself ranked.

Australia runs 0°C to 33°C for most people; Papua New Guinea runs 20°C to 33°C for most people. Bathurst runs colder, at -8°C and Alice Springs runs hotter, at 43°C. Depends on you — which range fits your tolerance is the real question here, not a score.