Not necessarily. Total consumption depends on the appliance design, programme, load and duration. A lower apparent temperature is not a complete energy comparison.
Understanding this situation
Use the manufacturer's published information for the exact programme and model rather than judging by cabinet warmth. A longer low-temperature process can still be the intended efficient treatment for a particular technology, while an unsuitable load undermines useful comparison.
A useful next step
Choose a garment-compatible programme and follow capacity and maintenance instructions. If performance or consumption changes sharply, record comparable settings and loads. Do not bypass safe operation or run unattended to chase a hoped-for saving.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.