SOCOM 4 is the weakest entry in the SOCOM franchise.
The graphics in the game (especially in cut scenes) are very detailed, which adds realism to the game. The voice acting is nothing special. But don't fear, the cut scenes are usually very brief. The tactical aspect of the game has been taken out of the equation; it requires no stealth, and the objectives usually just go from point A to point B, with the exception of three missions set at night. The campaign is made up of 14 levels and is VERY short.
The online multiplayer is what SOCOM is known for and was built for. Sadly, it is not that great. You have the option to play the classic mode which is no respawn. It also has a lot of bugs; mostly every kill is a headshot. The game also is an over the shoulder third person shooter, but the over the shoulder aspect is sometimes very annoying. Your own head will tend to get in the way, and almost takes up the entire left side of the screen when in a confined space. In order to use the mic, you have to press up on the D pad, which can be very confusing for some players. SOCOM 4: U.S. Navy SEALs could have been much more.