Hobs often include burners designed for different loads. A smaller burner is not necessarily weak because it produces less heat than a larger one.
What the observation means
The useful comparison is with that burner's previous normal behaviour and the correct control setting. Pan size and assembly should also match its instructions.
A useful next step
Identify the burner position and model when reporting a change. Do not alter a small burner to imitate a larger one or fit another burner cap. A genuine new reduction or abnormal flame requires appropriate assessment rather than visual comparison alone.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.