Jynx underrated as a Raid Boss?

I managed back-to-back Machamp (C/CC, Cloudy) and Jynx raids this morning. 'champ went down with ~40 seconds to go. But it took me a couple of attempts to beat Jynx, and even then, it went right down to the wire each time.
First attempt I went in with Flareon and Moltres as my high-DPS front pair but I felt like they were just too frail, with the unrelenting Psyshock doing a number on me.
Second attempt, took it down - just - with a team of Houndoon (2107, Sn/FP); Gardevoir (2705, Co/SB); Tyranitar (3478, B/SE); Gyarados (3017, B/C); and managed to finish it off with another Tyranitar (3209, B/SE). The resistances to Psyshock for four of those five helped a lot.

I did one two days ago, psyshock was the charge move. Won with 28 sec left. I didn’t study what I should use, but a level 38 Shadowball Mewtwo was there and a 100% Max Crunch Tyranitar. Couple level 30 Shadowball Mewtwos, too. I didn’t bother to change the bigger Mewtwo from Confusion though. These days I beat Machamp with 40+ sec and Gengar with 50+

It's definitely a step up from Machamp- if it's referred to as otherwise I don't think it's correct.

The defense stat is considerably higher for one, but also, the DPS counters are also slightly worse (you'd have flareon as the best mainstream counter for jynx and alakazam for machamp). Not to mention the mixed moveset possibilities of Jynx, which is not a problem for Machamp (HS hits less hard than a resisted dynamic punch, and CC is easy)

It is hard because you are facing a psychic moveset without a ttar. I would still use your flareon and maybe one gengar at the start to put you ahead of the clock. Then try to dodge psyshock with the flareon if you think it will allow you an extra charge (might be better to have FT instead of OH in that case). Finish off with houndoom. Other movesets should be easier for your team.

Jynx is definitely harder than Machamp and GP is flat out wrong if they call it easier. It has more defense, which is the most relevant thing, but also hits quite hard. C/PS is a tough moveset to beat without Tyranitars.

Houndooms and Flareons gets the job done if you are fairly successful at dodging. If you can get a solid lead on the clock with Flareons, Aggron can be used as an anchor to finish the raid if having trouble keeping the team alive, but it absolutely has to have double steel moveset to have anywhere near acceptable DPS.

Houndoom with Fire Fang and Foul Play is a great moveset to attack “ The Jynx “ with
If you have a couple of Houndooms with this moveset then you sould be good to go.
Throw in your best three Flareons and even that Gengar if it has Shadow Claw and shadow Ball
That sounds like a winning team to me

No boss with Confusion should be underrated. Not even Claydol.

Psyshock is pretty easy, just throw in your Tyranitars and win. Confusion isn't going to hurt as much as Alakazam anyway. Avalanche is the hardest.

Soloing Ninetales in rainy weather was easy, level 30 Vaporeons can do it with 70% chance to win according to pokebattler.

Jynx is typically pretty easy. Ill admit, confusion/psyshock was a little rough but i still managed to solo it with a little under 20 seconds remaining. I am level 40 though, with a couple perfect, maxed out flareon, tyranitar, and gengar. In my experience, Firespin/overheat flareon will win easy. I LOVE Gengar as a pokemon, but in PoGo hes just not good... far more glass than cannon. Dont get me wrong, his dps is silly high, but hes only really useful in very specific situations. 2 30+ flareon should do the trick, maybe a Bite + Stone Edge/Crunch tyranitar to clean up just in case. Compared to machamp, jynx is definitely a lot more difficult tho. Did a machamp earlier and finished with 67 seconds left, and jynx with about 30-40.
EDIT: probably should have finished reading the comments first. Without a Ttar, its still pretty doable. If you're dead set on using a gengar, only put him in the first slot. I cant remember what other mons ive used for jynx, since i never need more than 3, but i want to say Golem is a decent attacker as well. If all else fails, maybe a kyogre?

Jinx and Machamp are on par with each other, depending on moveset. Bp/Hs Machamp is the most difficult of the group. Con/Dk Jinx in cloudy weather is no joke. Those are the only movesets that I have had trouble with on Jinx and Machamp, beating each on the third try with under 3 seconds.