Japan holds a 64–36 advantage over Türkiye on the Relative Advantage Index, a clear margin.
The margin is driven by military spending (67% of the combined total, $62.2bn) and economic size (GDP) (75% of the combined total, $4.0tn). Türkiye leads on active personnel.
1 factor — nuclear warheads — could not be scored because the figure is unpublished for at least one side. Those factors are excluded and the remaining weights renormalised, never substituted.
| Factor | Japan | Share | Türkiye | Weight |
|---|---|---|---|---|
Military spending SIPRI Milex | $62.2bn | 67%33% | $30.0bn | 33% |
Economic size (GDP) World Bank WDI | $4.0tn | 75%25% | $1.4tn | 27% |
Active personnel COW NMC | 247.0k | 41%59% | 355.0k | 20% |
Logistics & power projection OurAirports | 270 | 69%31% | 120 | 20% |
Shares are each side's portion of the combined total for that factor. Weights are renormalised across the factors both sides publish — see the methodology. Data read 2026-08-04.
Every combination inside the top 30 of the Composite Power Index.
Bordering states — the comparisons people actually search for.