Well, the thing is, because the movement is a bit slower and you take a few more hits to kill than in CoD (and can be revived), there's a lot of room for squad tactics.
The slower movement means that and a firefight is started, position changes are done in a more careful pace. Running headlong into enemy lines in hopes of disrupting their formation isn't as strong of a tactic since you don't move at mach 1 and don't have gobs of health. But, it's also still possible with sprinting, albeit you lower your weapon. Moves and counter moves can be made as squad mates now have time to see and react to enemy movement with tactics, instead of just a fast and accurate aim. Of course, the game is still pretty deadly overall.
The class badges then add more tactics. Medics can revive fallen teammates, preserving squad coherency in protracted fights. Engineers can setup turrets to help funnel enemy troops, warn or prevent flanking moves, etc... Scouts/Snipers can scan for enemy troops in the area giving your team some intel to plan an assault. That's not even looking at the secondary badges you can take.