Facebook图形api rating_count错误

Question

我正在使用Facebook图形api获取页面信息，特别是评分和评论

这里是一个示例：请注意，总共有4条评论，但rating_count只有2

{
  "overall_star_rating": 5,
  "ratings": {
    "data": [
      {
        "reviewer": {
          "name": "Example_1",
          "id": "some_id_1"
        },
        "has_rating": false,
        "has_review": true,
        "recommendation_type": "positive",
        "review_text": "Some_text_1",
        "created_time": "2018-09-30T00:48:51+0000"
      },
      {
        "reviewer": {
          "name": "example_2",
          "id": "some_id_2"
        },
        "has_rating": false,
        "has_review": true,
        "recommendation_type": "positive",
        "review_text": "Some_text_2",
        "created_time": "2018-09-23T13:31:30+0000"
      },
      {
        "reviewer": {
          "name": "Example_3",
          "id": "some_id_3"
        },
        "has_rating": false,
        "has_review": true,
        "recommendation_type": "positive",
        "review_text": "Some_text_3",
        "created_time": "2018-09-22T22:34:00+0000"
      },
      {
        "reviewer": {
          "name": "Example_4",
          "id": "some_id_4"
        },
        "has_rating": true,
        "has_review": true,
        "rating": 5,
        "recommendation_type": "positive",
        "review_text": "Some_text_4",
        "created_time": "2018-05-27T21:13:19+0000"
       }
    ]
   },
   "rating_count": 2,
   "id": "page_id"
 }

有人知道为什么这样做吗？

我不想拉出最大查询来计算总评分数...任何帮助将不胜感激。

谢谢。