You guys all understand that this isn't FM2014 right? Thus you can't expect the success rates of corners in real football to be similar to the success rate in Top11 (Although even FM2014 likely has more corners scored than the 1/50 someone quoted earlier in this thread).

Likewise, the comments are essentially the "highlights" of the game. Thus corners which are going to score will always be shown, and many of the attempts that don't succeed will not be shown. Likewise double corners, or triple corners, which eventually end up scoring, will probably all be shown as they're part of the highlight, since they lead into the scoring movement.