I have all three tanks as well and would have to agree, warrior. Not even a contest. Although my warrior is geared better than my SK and pali. With my heal team, I think you can pull all of Seb HH onto my warrior and he will survive it or at least there is no spot where anyone can pull enough mobs to wipe my team. I have one or 4 toons that keeps using AE spells or wild pets and I'm too lazy to adjust the ini, so CC is broken a lot and my warrior is usually tanking all mobs at once. Not a problem. I don't care about feign death pulling as I don't pull a mob, I just pull the whole area. I don't even have to use any disc to survive through @6 EoK T2 mobs. Although my heal team is two clerics, a shaman and a healer merc as I run more than one group all the time. Warrior is geared with all the good EoK chase loot in all slots except ears. Sk and pali isn't that far behind in gear and they do great on most things. It's just when things get too tough for them and they die......I know my warrior would have survived. With conditions, my warrior will disc/defense based on nameds, number of mobs or if he falls real low on hitpoints. With all the different defense disc combat abilities AA's and clickies, always one up ready to go. I mean, the two best ones refreshes so fast, a warrior can almost always run a defensive disc at all times. It's when I manually play my warrior that I see I don't even need to disc, but warrior bot will disc.
One thing I really like about my pali is that he is a good healer as well as a tank. I set up my Tear of Alaris team and forgot to start the mac on my cleric so pali was the only one healing and that team was fine 8 hours later. If the tank was my warrior, group would have wiped. Not sure how well SK's do refilling their own health bar as I just pretty much started the SK and haven't really used him on his own, but would assume on low difficulty camps, SK/Pali would do better as incoming DPS is probably trivial, so you can run more DPS classes instead of a dedicated healer. With a warrior, you will always need a healer as well.