Here I excerpted some of the Fallout talents frm the wiki:

Action Boy Additional action point available in combat
Adrenaline Rush +1 to Strength when your HP drops below 50%
Awareness Examining a target shows hitpoints, weapon and ammunition count
Better Criticals 20% bonus on the critical hit table
Bonus HtH Attacks Hand-to-hand attacks cost 1 AP less to perform
Bonus HtH Damage +2 points of damage for hand-to-hand and melee attacks
Bonus Move Two extra APs per turn that can only be used for movement
Bonus Ranged Damage +2 points of damage for attacks with ranged weapons
Bonus Rate of Fire Ranged weapon attacks cost 1 AP less to perform
Cautious Nature +3 to Perception during random encounters
Comprehension 50% more skill points when reading books

----10 of the first 11 are for combat----

Cult of Personality People will always view you favorably, no matter your reputation nor their alignment

Educated +2 skill points at level up
Fortune Finder Additional money is found during random encounters
Harmless +20% to Steal


In Fallout 2 there are many more talents than in D:OS most of them because you can increase skills like Gambling or First Aid or Doctor or Outdoorsman or Speech or...
Then there is a lot that increase dialog statistics.
Then there are many that are for combat, like unarmed or +criticals.
Then there are things that could have fit into D:OS, like "Fortune Finder".
A really few of them are utility perks (and not dialogue related) like

Scout Amount of viewable map increased
now I have problems finding more...
Pickpocket Size and facing modifiers are ignored when stealing from someone
Mutate! Change one of your traits

Vice versa you cannot find most of the game changers of D:OS in Fallout like Zombie, Comeback Kid and Lone Wolf. This is the main difference. [I did not use it but I like Zombie more than the other talents because it could be the groundwork of an entire built and not per se balanced or unbalanced]

Actually it is hard to find non-equivalent talents from both games. Mostly there are just more of them in Fallout 2. And their talents are much less daring, more comparable, less situational and hence more balanced. (although +2 ability points as a talent was underpowered for other reasons, the number should have increased by level)