Bet you that dear old dad decides to seek retribution against the store, especially the defender, if he finds out who got his son. Then perhaps he will either go to jail for good or have an early reunion with his son.
Real weapons or not, armed robbery is armed robbery- even fakes get the full charge. The intent to commit armed robbery is still there no matter what. If criminals and their families don't like it, then maybe they should look at the other side of the coin. If you're asking for trouble, you will get it in spades.