Here's my view on the whole situation:
Suh slamming the guy's head into the ground and then accidentally (you can tell very clearly from the video that it was an accident) "stomping" on his arm was a dirty action. No doubt about that. BUT, the Packers player did not get hurt. That's what makes this different in my book from, say, James Harrison body slamming Mohamed Massaquoi into the ground and injuring him. Harrison got a big fine for that, but no suspension. Yesterday, on SportsNation, Beadle said that only two players have ever been suspended for their actions on the field: Albert Haynesworth and some guy from the Stone Ages. If that's true, suspending Suh for something like this is an awful big double standard on the part of the NFL.
So I ask again: if Dietrich-Smith would have been injured, than should Suh be suspended? It's such a dumb premise that because he didn't hurt the guy, he so obviously had no malicious intent.
You know the answer because I've told it to you...so why do you keep asking? It shouldn't matter if he was injured or not...you look at the act itself. If Suh wanted to cause pain/damage he would/could have. That looks like what Hanesworth did. Suh didn't put any pressure or follow through on his "stomp". It simply LOOKED really bad. For that and the head push he should have been ejected and gotten the personal foul and that's it. The punishment should fit the crime.
Here is what factually happened
2 players in aggressive tangle up.
1 ends up on top and pushed off the other's helmet a few times in trying to get up/off.
same player kicks down in the air aggressively in the direction of player 2 who is directly under/right next to him but makes no contact.
If you read that and didn't know who the players names were the most that should happen is an ejection and penalty. However if you see the video and see that it's Suh and see the rage in the kick it's easy to let emotion/perception overtake reality.
Because it's Suh..who has had past fines for aggressive play...a fine wouldn't be unreasonable. Also if I were the coach I'd discipline him further for doing something so stupid and damaging to the teams chances of winning.