Ethiopia vs Tanzania

Ethiopia has no monthly cost data yet; Tanzania has no monthly cost data yet — not enough data to call a winner.

Ethiopia has no safety score data yet; Tanzania has no safety score data yet — not enough data to call a winner.

Ethiopia has no mobility score data yet; Tanzania has no mobility score data yet — not enough data to call a winner.

Ethiopia has no culture score data yet; Tanzania has no culture score data yet — not enough data to call a winner.

Ethiopia's passport reaches 13 destinations visa-free to Tanzania's 47 — Tanzania 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.

Ethiopia is better connected: 13M passengers/yr against Tanzania's 5.7M passengers/yr. Ethiopia is quieter than 57 of 87 countries worldwide; Tanzania is quieter than 70 of 87 countries worldwide. Ethiopia sees ~12 air passengers per 100 residents a year; Tanzania sees ~10 air passengers per 100 residents a year — a derived figure, not itself ranked.

Ethiopia runs 8°C to 30°C for most people; Tanzania runs 16°C to 36°C for most people. Gambēla runs hotter, at 43°C; Mafinga runs colder, at 1°C. Depends on you — which range fits your tolerance is the real question here, not a score.