Stats in SWTOR are a source of confusion for many players, but it does not need to be that way. All stats in SWTOR operate under a simple system even though it may not seem like that. In our SWTOR Stats guide, we are going to clear that up for you so you know exactly what each stat type does in Star Wars The Old Republic.
Each class in the game has its own preferred stat. For Jedi Knights and Sith Warriors this is strength. For Troopers and Bounty Hunters this is Aim. For Jedi Consulars and Sith Inquisitors this is Willpower. For Smugglers and Imperial Agents this is Cunning.
When it comes to these primary stats, the class mentioned above tends to benefit from these stats more than with any other class.
What I mean by this is that the Jedi Knight and Sith Warrior gets melee bonus damage as well as force power bonus damage from Strength, whereas every other class only gets melee bonus damage. The Trooper gets Tech Bonus damage from Aim in addition to the ranged weapon damage bonus that every other class receives.
As a result, you want to focus entirely on maxing out your main stat rather than worrying about anything else. In addition to your main stat of course you will need to get a lot of endurance to increase your max HP. You do not want to have too little HP otherwise you will die very easily in all aspects of the game.
In other MMORPGs, your total health is not really important because you tend to not take very much damage. In SWTOR, that is a lot different, as in PvP and in PvE you will have to take a lot of damage based on the way encounters are designed. No matter what your class or class role is, you will want to get plenty of HP in order to increase your strength.
In addition to HP and your primary stat, you will want to max out your power and crit ratings. These stats increase the effectiveness of your attacks and the critical hit chance of your abilities. Both of these stats increase the effectiveness of both of your ability types, so you do not have to worry about whether these stats are for casters or other classes as they work for classes of all types regardless of what type of damage your particular class uses.