At first, I was also impressed by Ghost Recon ... so much so that I passed it and hardly noticed. The game is not bad: good graphics, realism (a bullet is death, you can't take a lot of cartridges, etc.) I don't know what else I liked. But still I liked the flashpoint better ...
About the topic ... I haven't played Raven Shield, but I think KS among multiplayer team shooters is the best 
For multiplayer, there is nothing better than KS yet, probably in the near future it will not, at least it seems not planned.
These games cannot be compared, because they belong to different genres.
CS is a purely multiplayer shooter, of course with its own tactics, but there is almost no realism (yes, in multiplayer, he almost didn't give up on figs).
And P6 is a tactical simulator focused on a single player, with all the ensuing consequences - realism, tactics, etc.
I disagree about the single player orientation - for example, I only went through a couple of missions in singing, but I have been playing multiplayer almost since the game was released and I think it is an order of magnitude more interesting and of course better than CS.
Often, for example, on the CS forums, they write about the discrepancy of one or another weapon in the game with a real copy, if realism is in fig, then why does everyone so want to see there not a futuristic weapon, but a real one, but at the same time, no one soars amazing survivability of players and the ability to jump into the eye of the enemy.
If realism is in fig, then you need to play either Quake or Unreal, in which everything is unreal, from weapons to physics.
Gentlemen ... what are we arguing about? : shock: Games are completely different, for different tastes ... to whom meat and drive, to whom stealth and "one shot - one dead" ... There is nothing to compare and that's it ...: twisted:
Gentlemen ... what are we arguing about? : shock: Games are completely different, for different tastes ... to whom meat and drive, to whom stealth and "one shot - one dead" ... There is nothing to compare and that's it ...: twisted:
SOLIDAREN 
Gentlemen ... what are we arguing about? : shock: Games are completely different, for different tastes ... to whom meat and drive, to whom stealth and "one shot - one dead" ... There is nothing to compare and that's it ...: twisted:
SOLIDAREN
Iiii ... nisamnivayushi: twisted:
It's the same as arguing: Which is better FALLOUT or HEROES OF M&M! (ALMOST)
Although here an example will be more relevant: which is better than ULTIMA or some RPG but not online (This cannot be compared)