>>15490640
>>15490664
These. Also, the AI is not only better because they actually use their weapons timely, they're just plain better at doing everything, from throwing nades to navigating rooms to covering openings and as many angles as they can. They also actually know how to do the whole slice the pie thing.
The AI is also more than capable of LEADING squads on their own. You can configure custom/skirmish matches where you have TWO teams clearing the map, one can be led by you and the other controlled entirely by AI and they'll do a good job of accomplishing the objective, regardless if it's hostage rescue, bomb defusal or whatever. Playing the bigger maps with two teams is fun as fuck and the AI-only team often has only one or no casualties. You even have the option to play as a squad member and have the AI lead you.
3 also has bullet penetration for all surfaces, not just doors like 4.
>>15490735
As far as I know SWAT 3 only has problems with 8 and 10 where you need DDraw fixes or wrappers to fix a severe performance loss.