Tanks, please use strength gear.. :(

[Erit]

-Snip-

This brings up the other half of the "skill" thing. Let's remember the rules of fist:

If you are not an experienced tank who knows the ins and outs of a given dungeon, run with Vitality accessories (not necessarily full VIT, but two or three pieces to lend some wriggle room.)
If you are not an experienced tank who knows the ins and outs of a given dungeon, don't do multi-pack pulls.
If you are an experienced tank who knows the ins and outs of a dungeon, run with Strength accessories to accelerate kill times and look badass.
If you are an experienced tank who knows the ins and outs of a dungeon, do multi-pack pulls as you see fit to accelerate clear times and look badass.

If your group has absolute garbage AoE capability (like, say, PLD, double NIN and a SCH), take whatever build you want but for the love of the DarkWaradin don't pull half the sodding dungeon in one go.

Now notice how the scenario you describe doesn't jive with those guidelines? Like as not your tank was just a novice who thought he was the new hotness about to go solo Savage.

But as others have been saying? If a pack of trash is taking the average runtime of an episode of Judge Judy to die, maaaaaybe look at the people who were recruited by the DF to kill the damn things before you look at the person who volunteered to be punched in the face for you.