Seriously I usually don't say anything about your reviews, because you're onto something most of the time, but you are way off with this one. I too for one thought that nothing could top CoD2 and then Airborne comes, the game is downright amazing, I don't know why are you complaining about the whole crosshair thing, if anything it's better this way, you can either horribly miss or accurately hit your target, how so? Shoot in SHORT BURSTS! Don't go full auto! But then again you must do this on nearly every other shooter.
Game graphics and effects? I did notice the physics thing you said, but it really didn't distract me all that much, since I was too worried about shooting the other 10 enemies rather than looking at the dead one. Graphics were gorgeous, and FINALLY someone got the motion blur RIGHT! I really hope shooters from now on start to do the same and calibrate the motion blur properly like they did on Airborne, I'm absolutely loving this feature.
If you think the game's AI is too weak, then play on hard, but then again there's really NO POINT in playing below normal on this game, in order to make up for the short single player campaign (This is where we see eye to eye, it was too short). Anyway, I'm sure the Nazi Elites will give you a run for your money (Unless you start abusing gammon grenades and Panzerschrecks), especially on hard.
And finally, about the Slow motion thing, it is obviously done for you to read what you got from the upgrade without pausing the damn game (Which in my opinion is even more annoying), I really loved this thing too, it helped get those damned nazi elites (or any other enemy) down in times of need (And this happened more often than not).
All in all, I think this game could've used a bit more of fine tuning and a longer (WAY LONGER) single player campaign, but it was truly an amazing game to play (Didn't expect this from EA). Finally another game got that same WW2 itch that Call of Duty 2 had.
My rating: 8/10 (Only because of the Multiplayer)
Note: Do yourself a favor, play this one on the PC, this is a MUST play shooter for the PC, it's just not going to be the same on a console, believe me.