-snip-
Might've been exaggerating when I said 10-20 posts, but you get the point. He had less than 132 activity on the date he claims he sent the PM
That's not the case... the post count would be current as of the screen shot... Unless he screen shot it on the day he sent it. Your outbox will show your current rank and post count and activity, not what it was when the message was sent...
So if he had taken the screenshot now so this picture would had to show something else.