I like AO better but it requires some extra tweaking of the files to get things perfect. Shotguns are less OP due to ammo damage and AP values. AI accuracy is more realistic, no full auto laser beaming. Traders have better stock of items and ammo. Mutants are bullet sponges because of this. Less variety with weapons (unless you count variants) and less ammo variety. Shotguns > everything else in CC mostly, because buckshot has AP value. AI is laser accurate on full auto fire. Ammo is scarce in trader inventory requiring save and reload for more than 1 mag.
More weapon, ammo and consumable variety