Having just reread the first post, I'd say both sides have a case.
On one hand, the title alone suggests complaints since "overpowered" is generally a negative word. Also, the wording in the actual post is rather neutral, so there are few spots where you can easily tell what he actually feels. This means that if you're already tinted by the topic title, it's easy to read in negative feelings into the text.
On the other hand, there simply isn't any complaining at all in the entire post. Again, much of it is because the language is so neutral and factual, but still - if you actually read the post there's no reason to treat it as a complaint.
I'd call it a failure of communication. Nothing more nothing less. You can't win'em all the time. Move on, nothing to see.