Database queries in cron hook need condition for entity bundle

In radioactivity_cron() we have the following code:

foreach ($bundles as $bundle) {
  $profile = radioactivity_get_field_profile($entity_type, $bundle, $field_name);

  ...

  $cut_off = $profile->cut_off;

  ...

  $cuts = db_delete($table_name)
    ->condition($energy, $cut_off, '<')
    ->condition("deleted", "0")
    ->execute();

If we have profiles with different cut off values (let's say 5 and 10), then we always delete rows with energy less than 5.