No motor rating makes unsuitable waste or a restricted drain acceptable. Use the permitted-food list and operating limits for the actual model rather than treating power as a guarantee against trouble.
What the observation tells you
A stronger motor specification does not describe every part of the grinding system, mounting or discharge route. Nor does it establish that a slow-clearing existing appliance needs a larger replacement. First identify whether the problem concerns food loading, water flow, the mechanism or drainage.
A useful next step
Give the engineer the observed fault and normal household use. A supported diagnosis is more useful than choosing parts or equipment from the power number alone.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.