Does the prestige in of MW3 4D1 different from MW2?...i notice that when i hit the level 80...there is another rank..even thought i didn't enter the prestige mode. I need expert on this to explain. Thank you 4D1 community.

No, both need you to finish level 80 as well before you can prestige.

When you hit lvl80,In Barracks it shows the next prestige.

When you hit lvl80,In Barracks it shows the next prestige.

he don't know what is prestige.