i am not mass pull tank

[Fynlar]

Or longer. You just can't and won't get from boss to boss as quickly when you only have buffs and other useful cooldowns available for half the mob packs, thanks to small pulls.

Again, I've pulled dungeons like this, the difference is not as extreme as you think assuming a similar level of party damage output.

If the damage is good, it'll still be a fast dungeon. If it's not, it honestly doesn't matter as much whether I pull big or small (and if it's really bad, with a big pull it could end up to a wipe because the healer cannot outlast).

Single pull is definitely not 2-3 mins longer than big pull, cds just don't line up well and overall aoeing more stuff at once is much higher dps than single target combos.

I have done both kinds of runs and seen the results firsthand with parties with competent DPS. Yes, that really is about how much difference it makes.