It's because you're fighting a team on Auto with the ability to retreat for the "perfect run." It's quite easy to defeat someone who has more power than you by simply observing what the AI will do on Auto, then retreating, and interrupting the mysteries in the next run. You also have 3 teams to do so, and they recover a bit of HP after every battle.

Survival Trial is the only thing that I know, where you can get a FULL ninja or the equivalent in fragments towards that 5-star. It also can give a Seal Scroll on the 12th clear, and other goodies through breakthrough. Considering those rewards, making it SLIGHTLY more difficult is a minor thing.

Actually the enemies stats in survival are perfectly normal, it's your own stats the get changed, which is very dumb system honestly.

Yeah that is one area where I get slightly annoyed. It seems like the power is correct among all my characters but the refines definitely aren't standard as people much further down than me are faster than the one character I have all my best refines on.

Try to put your ninjas in the right order like in your normal team , I think this is the problem you have with refines , probably your best refines are on the 3rd or 4th ninja

Order doesn't matter in survival, in survival it takes all your total stats and gives 1/4 to each ninja. Thing is most good players focus stats to min/max, best refines on your move 1 & 2 ninjas, best defensive magatams on your tanks and etc. And the way survival works ruins that.

The problem is gear for enemy works perfectly fine, which is dumb, its should be same for both team. Either both use 1/4 total stats or both use correct gear.

Hey! I am sorry, can you clear this for me? Let's say I have much better refines than the enemy, but in order to make my team work correctly I have to place my main first on the field, although his position is 4 and in the end the main is actually last. So do my best refines go to main, since I place him first?

Let's say you have 1050 initiative on your move 1 guy who you use to start combo and 650 on other 3. And your enemy is weaker with 800 on his move 1 guy and 600 on others.

But in survival it will add your initiative together to 1050+650+650+650(3000) then split it evenly to your 4 ninjas, so you will have 750 speed on move 1 guy and 750 on other 3, while your enemy still have 800 on his move 1 guy and 600 on others. So he will go first even though you have better refines because of how it works.