I doubt it because the bragging is too obvious. Also, even you admitted that "中共编撰的史料" "也有夸大或者隐瞒的部分", how do you know that the "夸大或者隐瞒的部分" did not exist in this article? That's why I said we need to check other sources to varify the fact.
BTW, I appreciate your gentlemanhood in the discussion. Thanks!