2 years vs 30 days

I going to talk about something that has happened a long time ago but I thought it was something that happened that shouldnt have. Plaxico Burress was sentenced to two years in prison for shooting himself in the leg one night at a night club in New York. Now how would a guy get two years for shooting himself in the leg and Dante Stallworth can kill someone driving drunk and only get 30 days in jail. Something is fishy there and I think someone is getting paid off in this situation wich is sad. But I dont what do you guys think?