102 medals used, started at 4 stars, ended at 4 stars

[explorertynon103_3174937]

Wrong.

The only time stars make a serious difference is when they are over 9 stars.
9 stars and below you barely feel or see the difference in combat at all.

You sure your account is maxxed out already?
Do you have all talents as high as your level?
Do you have Justice level equipment?
Are they over level 100?

No? I thought so. Now forget about medals for now and focus on those other things.

Clearly you have no understanding of the game or star system. Let's do hero vs hero. Same equipment and talents. I'll have 7 stars, you have 0. We will see if it makes a difference.