Most of the levels I see here are off. (I never said the Juggarnaut was properly labeled either :). But here's what a friend and I figured out...
About every 10 Levels your con range increase by 1. IE: a lvl 2 mob to a lvl 1 char is orange... a lvl 12 mob to a lvl 10 char is also orange. When you get into the 40's you'll notice a 5 lvl range in your cons. ie: a lvl 50 will start conning orange at lvl 45. By the time you hit lvl 50 you have a 6 lvl range for each con color.
Yellow to 50 = 45-50 Orange to 50 = 51-56 Red to 50 = 57-62 Purple to 50 = 63+
So, Something being lvl 65 is not that impressive to a group of 50's... The juggarnaut is probably much higher.
and by the way... that strategy guide, or whatever it is that says the lvl's to the mobs is only good as a rough estimate. Most of the lvl's it shows are pretty far off... There are very few MOB's in this game that only have one lvl... IE: The Abysmal's are not just lvl 50. They span about 5 levels at least. Just an observation I've made while talking to some people about MOB cons...
And not to downplay this web site. There is a lot of extremely usefull info. it just get's hard to determine level when it's grape to 50... it's just guessing from there on out. (or bribing Mythic for an anwser)
There is no way this is as hard as a Juggernaut. Juggernaut one hit me (lvl 47 Hero fully buffed) and killed me. I can hit this thing several times before getting killed. Juggernaut is far more uber.
Con's Purple to lvl 50 (which means it's at least lvl 61)... And considering the Grand pooka is showing lvl 61-64, I'd say this is at least 65. There's no way the grand pooka is harder than this thing.
Btw, If it aggro's you don't try running. This thing runs like it's on speed 5. I'd be curious to know if a bard with speed 5 can out run it... our speed 4 group couldn't.
Good news is that it is neutral (I assume till you kill it too many times) by default.
Did this with my 50 chanter and 50 druid healing it, had another 50 chanter there but all spells were resisted. Dropd a nice sword but it was only 25% bonus.
No way this is lvl 55 - took my group of 45+ to kill this thing which aggroed on our druid 15 mins to kill and it killed 1/2 our group in the process - we just got lucky and had a group come by and help us rezz and heal - this is about same as jugg - lvl 65+