What’s the point of capping the base in first minutes of the game?

Recently, I turned on assault and ecounter.

First battle I had was on Murovanka, and it was Ecounter. Most of the players went to the cap zone (heavy flank). I was doing gunmarks (and I went to forest). My team won the heavy flank in few seconds, and started capping in 3. I did one shot, and the battle ended almost instantly.

I dropped on my gunmarks, because they capped the base in first 3 minutes, I had no chance to do anything. What was the point? Everyone ended up with 0 or 1 shot, no one got much XP, no one got good results from the battle.

The battle might be win in other way, we won heavy flank, and we holded the forest, everyone could do some damage and everyone will be happy.

What's the point of winning like this? You get nothing from it, just a fast win, and dropping your stats because you have no time to do anything.