i don't agree, if Clemenza also (tessio) betrayed Micheal, that would give the impression that nobody is loyal. The caporegimes of the godfather 1; Tessio and Clemenza, both betray Micheal. One of them needs to stay loyal. Otherwise it give a bad impression to the crowd..they would think is was very normal to betray your boss, they would think (nearly) everybody did it. And because of that they would think Mike was very stupid, to trust his men so much...... maybe i'm getting to serious...