point is, defenders have still more beneficts than the attackers.
the reason why we have no phase, is that it’s much easier to defend than attack. defenders, all what they have to do is build rally close, wider the defense and basically waste tickets of the attackers until they drains out to 0, or the time runs out.
on the other hand, attackers has to do the same thing except they also have to capture the objective. meaning that, you have to assault the point, through frontal assault or flanks, get rid of those said threats, reaching the point, clear out the point, and hold and prevent defenders from reaching it while of course, avoid the more ammount of casualties.
attackers do more and have to be weary of many things rather than the defenders just wasting their lives diying and defending the circle point. they have more " room " to work with. where the attackers has only of interest the circle.
on top of attacking, you are performing a mobile defense essentially.
worse is, when you assault well entranched positions, not always goes well for attackers. as they say, defence is more effective than offense.
but in the end, it all comes to good players rather than how the gamemode works. which unfortunately, on par skills, defenders are most likely gonna win because again, they do not have to worry about tickets. while the attackers have to worry about tickets, and beat the defenders to it.