Of course cardio is very important to be fit but it mainly helps in keeping heart strong, healthy and fit. You need other exercises as well to keep remaining parts of your body fit.
Do you know that metabolism is the key to burn fat? Yes, higher the metabolism, the more fat you lose. Weight training or strength training or lifting weights can burn more calories/fat than jogging as it boosts metabolism many times compared to jogging thus helping you lose weight faster.
Also running for long time is stressful to your joints and ligaments. So don’t just focus on single exercise. Cardio along with little weight training keeps total body fit.