>>2113Most categories will just be toss-ups between the USA and Russia since they both have the institutional knowledge to produce all modern weapons. The exception is tanks and tracked howitzers since Germany does both pretty good.
If you want to have more contenders, you need to go more niche. Best corvette, frigate, attack and transport helicopter can be contested by Europe. Best light anti-tank rocket and anti-tank guided missiles can also be contested by multiple countries as can best APC (tracked or wheeled) and best IFV