well, that is kinda the most important factor, isn't it? abilities and talents is of greater importance than starting attribute choices. such stuff is also more significant than starting accuracy, deflection and defenses. vigorous defense, a single fighter ability, grants +20 to all defenses for 15 seconds, and most battles don't even last that long. knockdown, as others have mentioned, is invaluable as it is effectively a stun that also significantly reduces enemy defenses. the paladin abilities, on the other hand, is support based. eder, the fighter companion, does not have great tank attributes, but 'cause of talent and ability choices, he becomes well nigh unstoppable relatively early in the game... and he also does respectable damage.
*shrug*
the paladin is a support class. if you wanna tank as a paladin, you need be very careful in selecting talents and abilities.
HA! Good Fun!
I just ran some tests up to level 12 and it seems you're right here, the paladin's talents cant keep up in the long run and that's a very significant difference. Although I don't like having to drop Zealots focus
Fighters do single target melee damage better than anyone else too. Barbarians are AOE specialized.
Uhm. Rogues?
Rogues are best at range. With guns, especially.