Is your Gamerscore truly legit?

[AutomaticDriver]

Well I cant lie standing up. *goes to lay down* just kidding.

About 4+ years ago. I bought the game NCAA basketball 2k7. I was playing with a friend. I decided to ask him. If he wanted to get the achievement for holding your opponent to 20 points online. He said sure. Anyway I got that achievement by boosting.

Another time(same game). I put the Half to 1 min so I could get the Louisville vs Kentucky Rivalry achievement.

Boy do I regret doing those. I really wish Microsoft would do something. So we could delete games w/ achievements off our gamertag. Because I dont want the gamerscore for those achievements. Because I feel bad for doing it.

Now I wonder if I could say playing a Sports game on Pro instead of All-star or higher, could be considered cheating to get achievements. Since Then, When I play sports games I always play on All-star or higher.

So anyways. Have you guys ever did anything like, what I did?