I am not buying any call of duties ever again.
They are the exact same with the exception of 3 new guns and new maps.
In about 3 months they'll probably release a new map pack for around 30 bucks which give you 3 new maps.
Instead of trying to fill their money hungry pockets with the money from 10 year old's parents, they should improve the game.
There are a lot of bugs, modders everywhere which they are doing nothing to prevent, until it's too late. (reset)
Even the campaign seemed like they didn't even try. I was looking forward to a shooter not some mortal combat button combo shit.
This is just my opinion. If you like the game I envy you, because now I'm board shitless with nothing to do. I'm going to see if I can trade it in for bf3.
On topic:
Your brother seem's like a classy gentleman. I wish him well, I can tell he's already bright.