For the most optimal way to fight agaisnt them, that's up to you and your team XD
*The most important thing you must remember in PvP that there are 2 ways to win, getting 100 points or defeating the enemy team completely. *DO NOT FOCUS ON EITHER ONE* A pro PvP fighter will need to adapt depending on who he/she is fighting agaisnt.
Another important thing you must remember is that you are not fighting a player, you are fighting an A.I, so they are be predictable. How?
1. They have predictable move patterns when capturing the point

The A.I will take the +4 control point if they have the chance, but let's say I were to take the +4 control point with my Paladin Darrion, they will technically have to choose between the 2 other +3 control points. The correct move for the A.I would be to move their team's Blood Knight Victoria to claim the top +3 control point, but they will never do that, instead they will send their Warlord Vincent to claim the bottom +3 control point instead. (I can guarantee this with the next picture)

As you can see, the A.I has moved their Vincent forward instead of their Victoria instead, allowing me to instead claim the top control point with my own Blood Knight Victoria, securing my chances of victory for the match(I did win incase you were wondering).
To summarize, this is their priority for capturing control points at any turn would be:
- Middle
- Bottom
- Top
One last thing to note is, they will only send melee units onto the point, they will surely never ever send a ranged unit to stand on the point unless either dragged into or knocked back(This really does happen) into the point.
2. They have 2 styles to go with at the start of every match
The A.I will choose either:
- Capture style
- Attack style
For Attack style on the other hand, the A.I will immediately use their ranged units to attack your weakest unit. Once all their ranged units have attacked, they will send out the melee units to capture the point. If you have sent any units to capture the point before the A.I has sent out it's melee units, the A.I will instead make the melee units attack the unit you have sent onto the point if they can, therefore sending your unit to capture the control point could be risky.
*Note: It is easy to deduce which style the A.I will go for when it's their turn to go first. As for the second turn, you will have to try and guess based on their teamcomp.
3. They have priority for which units to use it's skills first and when to use it
When the A.I units' skills cooldown is over, the A.I will begin to use it. But they also have a priority, and I have complied a list to show.
*Note: Before they use their skills, the A.I will run a calculation check to see if any of your units are low in health to be killed with a normal attack, if it is possible, they will use a unit whose skill is on C.D and has attack power that is enough to instead finish the job.
Skill priority list:
1. Guardians with offensive skills to damage the team
2. Champions
3. Shadows with offensive skills
4. Mystics
5. Rangers
6. Shadows with switch placement skills.
Guardians with team shielding skills (Thanks to Faye & her OP HP SHIELDS) and Healersare a special case as they will ignore the priority list and use their skills if a unit has reached a certain threshold percentage of health, if not, they will usually be on reserve.
Guardians that has defense skills only on the other hand are also special as they will not be used often or at all. (Eg. Paladin Darrion with Mirror Force skill)
And that is all you need to know about how the A.I works, now all that's left is for you the player to see and abuse the A.I as you see fit, if Valiant Force does not change their A.I thinking in any case :3