Brazil holds a 62–38 advantage over Mexico on the Relative Advantage Index, a clear margin.
The margin is driven by military spending (64% of the combined total, $23.9bn) and economic size (GDP) (54% of the combined total, $2.2tn).
1 factor — nuclear warheads — could not be scored because the figure is unpublished for at least one side.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 | Brazil | Share | Mexico | Weight |
|---|---|---|---|---|
Military spending SIPRI Milex | $23.9bn | 64%36% | $13.6bn | 33% |
Economic size (GDP) World Bank WDI | $2.2tn | 54%46% | $1.9tn | 27% |
Active personnel COW NMC | 367.0k | 63%37% | 216.0k | 20% |
Logistics & power projection OurAirports | 183 | 67%33% | 89 | 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.