Its difficult to explain RO2/RS2’s system in words unless you may experience a similar system from other military shooters.
Lets say we have Saigon from RS2 which has 7 caps. The first two caps are a large building and a large cathedral which both are difficult to cap as attackers unless they know where to attack. The attackers did a slow but sustainable pace due to the difficulty on capping the first points with stiff resistance from the defenders. The defenders have suffered heavier casualties than the attackers and since they have lower tickets, this is very bad for them but they still show a very stiff resistance at the 2nd cap which was the large cathedral and eventually they lost the cap because of attacker’s persistence and killed many defenders there.
Skipping to the last 3 caps where the defenders suffered even more casualties due to they didn’t realize they are losing too much tickets from the earlier caps due to their refusal to retreat to better positions. The only problem for the attackers is the time so they have to move faster and ultimately took the last caps after the defenders collapsed due to the combination of brutal attacks from the attackers and heavy casualties that the last cap don’t have much resistance anymore.
Another scenario is like assault mode in Enlisted where there’s this one sector where attackers cap 1 of the 2 points, then the defenders retake it and the attackers took another that resets the lockdown timer where again the defenders did a stiff resistance and even do counterattacks by retaking the lost caps from the same sector but the problem is they suffer heavy casualties for doing that. The defenders refused to retreat until the last few tickets left and eventually the entire sector collapsed and the attackers went on to the next caps without resistance due to the defenders ran out of reinforcements.
I still remember such matches in Rising Storm 2 and of course I remember some really stiff defenses as defenders in Tula Outskirts and Mamayev Kurgan from RO2 where artillery mostly did the job(I was a Red Army commander with a PPSh) at the trenches where eventually the attackers ran out of tickets and we won.