If I were you, even if I know that my chance of winning is slim, I will still try to fight the 3226 point guy because of these reasons:
1. This is not at gold rank where he could be a platinum level player. Looking at his team composition, only his first team is the only one that somewhat makes sense. I will explain later.
2. The other 2 teams have kill potential but don't have speed lead or turnmeter booster. Which means these are slow teams. It depends on their team power, if it falls just below 200k, I don't think all of the champions have high resist. So you can easily, outspeed, strip, and nuke.
And the most important point is:
3. That fight will give you 20pts per win. I have not encounter that big amount of pts per win. And it means when you win just one of the fight, even if it says you lose, you still win in points.
So how can you win? Here are some tips.
That team comp is basically this, first team is a speed battle, second and third team is not.
So let us say, you are still at the point that you can not win in a speed battle, it is okay. Give that battle to your enemy, concentrate on the other two.
You say you have 8 with over 200 speed, I would suggest you concentrate on the last team. That would be the easiest and I doubt that team have over 220 speed. And besides, Rhazin Skullcrusher and Septimus are usually clan boss champions. They are usually speed tune to a specific comp. He will not probably gear them very very fast.
His second team is also easy but a little tricky. There is Rotos. Because of this you should have multi hits champion that can kill Rotos before he moves. That is why I suggest you concentrate on the last team.
Now for the first team that I suggest you to skip. I said this is not a platinum level player. Why? Because of his team comp. First he is using Serris in defense. Serris, as of now, have dumb ai. If I will put her on defense this is just to scare not to win.
Second, He uses Arbiter but uses Tormin? It is like saying that I will outspeed you but I am not confident at my speed that you will probably outspeed me. Basically I am thinking that his Arbiter is not that fast. He intends to speed nuke with Trunda, but have a defense type Tormin(?) He could have place another nuker here probably a Skullcrown for a neutral affinity nuker.
Third, he is only using one turnmeter booster. This means, if he have a 300 speed Arbiter, the other three champions should be around 220 to 240 speed to move next. Or else if you cut in between his combo you have the chance to win. That is why I don't think his Arbiter is that fast. But of course it is a different story if this team comp is in gold rank.
Now these are basically what goes through my mind in every fight in tag team arena. I analyze their team comp. That is why I don't think tag team arena is dumb. It tests players strategy, champion's depth and gear depth. Even if you find players in your list that you can not defeat, then try to improve more.
Now you said, you are only level 53. I would assume you are bringing fully ascended level 60 champions. If not, don't get frustrated if you are match with players you can't win. Just try to improve your artifacts and summon champions that you need.