My dilema with monsters

This is something that has bothered me for some time now, specifically monsters in the the quest(s) that we do throughout the game.

The idea is, to get stronger, correct? To have more power to defeat monsters and enemies, but I soon found that some monsters ( and even some players for that matter),
are completely overpowered.
In one example, for instance there is Minister Lascivius who has a level of only 58, and a total power of only 4434131,
So, the thought is that someone that is a level 70 or so can beat that boss easily right?

Unfortunately that is not the case, im level 73 and with a power level of 49445485 and yet, I can only barely scratch that boss.
It's more like, the more I try, different formations, spent all sorts of gold on runes, and even got some stars from the earned tickets, it seems that boss is impossible at this point.

This also holds true with players that are 20 levels lower than some of us, and yet, How in the world did they acquire guardian gear from the start?
This is were the game is Unbalanced IMO, there should be instead, for instance, level requirements (the required level to be able to use a specific type of gear).

At this point, it makes no sense to go on, to supposedley get stronger, cause right around the corner, there is always some monster or some other player that is completely Overpowered.

Other thing is, does it make sense for someone who is level 80 to be allowed to attack someone who is level 20?
Shouldn't it be where players are only allowed to challenge others that are within thier own approximation of level?
Otherwise, it's a game to just troll, to plunder whatever they can get from others, and in some cases extremely bad cases of rage-quit.

There are level requirements for the gear,it is just that we level up past the required level long before we actually get the gear. Hopebringer at 20. Champion at 40. Guardian at 50. And so on.

In the wild, players can only attack other players that no more than 3 levels below them. So a level 80 should not be able to attack a level 20 player in the wild.

Quest Lascivius: 4,434,131 power You:49,445,485 power. Either you accidentally added a digit or you are terrible at the game (I am assuming the former). I beat Firelord Ignis in quest at under 5 million power so you may just not be setup right for Lascivius. I know some players it just happens to take longer to progress through the quests and heroics.

There are some monsters that are stronger and are a pain ( the reason being to stop players from growing at a fast pace and hence loose interest in it). If you look at the forums you will find quite a lot of useful ideas on how to beat them. So be patient and keep plugging away and eventually when you over come it. The satisfaction is greater than if you beat it at first go.

I did this quest before the patch, so I'm not quite sure how hard it is now. But a good strategy for lower levels right now is to build a really strong Queen P, as both a tank and a hitter. Just stack all your efforts on her for a while and she could take down several bosses for you.