Strongest AQW Class?

[Dicker Max]

I'm going to assume by your wording "strongest" is in terms of soloing,farming,pvp'ing and support.
There is no strongest class in AQW.
Every class in AQW has a purpose and an attribute that makes them shine.

When comparing SWOT to VHL, you'd see it's a multi target class with long range that excels in farming and dealing nukes,its dodge rates also makes it a good class in terms of pvp'ing,farming and soloing too so of course you'd think its better because it can multi target. Sure VHL it's a single target and doesnt have dodging capabilites, However it is a strong soloing class and has excellent endurance,deals quick and large burst damages with low cooldowns that can farm enemies faster than you think since it's designed specifically to kill enemies with large healthbars swiftly.

What SWOT lacks compared to VHL primarily is the availability for players, the ONLY way you can get it is by spending AC's, whilst VHL can be earned for absolutely free but be prepared for the terrible RNG and boring repetitive farming if you do not intend to spend money. (I spent 5k ac's buying Crag and Bamboozle just for this class).
SSOT can also run into mana problems if not used correctly and is quite unique compared to other calendar classes as it has different functions.
VHL however is just a spamming class that requires a no-brainer to use since it's user friendly.And you know what they say, the more complex it is,the more it's easier to break,so remember.

Complex class ≠ Better Class

It is easier to just buy SWOT but it is by no means a replacement for VHL.
What these classes both have in common is that there is absolutely no support skill's.

So you'd be thinking "If SWOT only costs' about 24.95$ and is almost toe to toe with VHL,I'd wonder what I can get for more?"

Even the most expensive class Master of Moglins is good in farming and soloing, but support skills depend on luck and is quite bad in pvp'ing
Great Thief bests in soloing and pvp'ing,but in terms farming it is abysmal as it can run into mana problems and lacks any AOE and range capabilites.<- and this means alot for classes worth more than 100$.

If AQW did have a class that bested in all categories such as farming,soloing,pvp'ing, and support.
All the other classes that existed before it would have no meaning as they are completely inferior compared to it,and it is also impossible to implement such a class because of the limited skill set.

So in conclusion,
I absolutely dont know what you want but if you mean by pure strength then go for calendar classes like SSOT/SWOT since they can deal nukes quite often to their opponents.
Void Highlord and SWOT when compared to each other are almost similiar.In my opinion,I'd think VHL is better than SWOT because simply of endurance and mana sustain.
These classes are not exactly the best in every category but they do what they can in what the norm of players would find in a class.

Edit: What infuriates me most is that alot of the classes in the game are very grindy or either super rare and strong which just fucks it all up for the new players.They should stop doing "rare" exclusive classes and just focus the "rare" label onto decorative items.This can atleast balance it all out for everything, but no, my name is not AE, its Mr Krabs' and I like money.

[Pantho]

vhl is the strongest class

[NoobFloob]

I'm going to assume by your wording "strongest" is in terms of soloing,farming,pvp'ing and support.

Then you could say that Legion Revenant is the "strongest" class you might think of based on your terms. It can solo faster than vhl (if the boss have an extremely high hp like 1mil+), one of the best farming class due to it's basic attack and fully AoE skills. It's also best in terms of support, the 4th skill give you and other players a good buff (forgot what that is).

It is the best all around class by far.

[Dicker Max]

Then you could say that Legion Revenant is the "strongest" class you might think of based on your terms. It can solo faster than vhl (if the boss have an extremely high hp like 1mil+), one of the best farming class due to it's basic attack and fully AoE skills.

I'd kind of disagree on that, since LR has been nerfed to oblivion that it's rank 10 passive is only useful against high health bosses, which is also kind of impractical and not alot of bosses have health exceeding 1mil+.
LR also can't tank damage like VHL can,with the extra endurance and damage reduction that VHL has it can almost solo every boss.
But what these both classes cant do is solo high damage dealing bosses.
LR's DPS has also been lowered than LightCaster after the nerf, even so there was a buff which made it deal more consistent damage and is almost on par with MoM in terms of farming.
In terms of pvp it also kinda lacks against classes that cant miss because they can drain it's mana by hitting LR constantly.
Sure its better in terms of support but are you really going to use LR as a support class when there are better ones out there?
LR can easily beat VHL in terms of farming well because Duh.. it was designed to excel VHL in terms of farming.

I'm not a VHL fanboy nor an LR fanboy, but like I said VHL was specifically designed to kill bosses with healths <300k HP very quickly without any problems. LR's purpose is to quickly farm high health mobs without any trouble too.