Its a long known thing in game. I cant call it a bug. All attacks in first day you get army are same. So guys who attack first day get medals, and because all battles are the same, they all share first place and got medals. Its not cheating.
I don't get your point... in R50 only two guys have medals... one guy has 3 medals the other 10 medals... the guy with 10 medals has made 13 offensive attacks ant 1 pillage in 6 days... so how he could have ended with 10 medals in 6 days?