Tanzania vs Zambia

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

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

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

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

Tanzania's passport reaches 47 destinations visa-free to Zambia's 42 — 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.

Tanzania's 5.7M passengers/yr annual passenger volume (across 2 scored cities); Zambia has no annual passenger volume data yet — not enough data to call a winner.

Tanzania runs 16°C to 36°C for most people; Zambia runs 6°C to 35°C for most people. Mafinga runs colder, at 1°C. Depends on you — which range fits your tolerance is the real question here, not a score.