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Lower AC is better for that game's D&D version

That video game (in your screenshot) and table derived from it are based on Advanced Dungeons and Dragons, 2nd edition, which uses the THAC0 system in which lower armor class values are better (and negative AC values are both possible and even better than low positive values).

In the current (5th) edition of D&D, and in each of the WoTC editions, a higher value is better since they are based on the d20 system. Your link to roll20.net is to 5th edition D&D, and that uses a "higher is better" system. That change, from TSR to WoTC, happened starting with the 3rd edition of Dungeons and Dragons, published in 2000. (WoTC bought out TSR in 1997).

Not All D&D Versions are the same. You have to read the label. 😊

Having a high dexterity, in 2nd edition AD&D, makes increasingly useful Armor Class adjustments (-2, -3, -4) as the dexterity score gets higher.

Lower AC is better for that game's D&D version

That video game (in your screenshot) and table derived from it are based on Advanced Dungeons & Dragons, 2nd edition – which uses the THAC0 ("To Hit Armor Class 0") system, in which lower armor class values are better (and negative AC values are both possible and even better than low positive values).

In the current (5th) edition of D&D, and in each of the WotC-published editions, a higher value is better since they are based on the d20 System. Your link to Roll20.net is to the 5th-edition D&D rules, and that uses a "higher is better" system. That change, from TSR to WoTC, happened starting with the 3rd edition of Dungeons & Dragons, published in 2000. (WoTC bought out TSR in 1997.)

Not all D&D versions are the same. You have to read the label. 😊

Having a high Dexterity, in 2nd-edition AD&D, makes increasingly useful Armor Class adjustments (-2, -3, -4) as the Dexterity score gets higher.

Lower AC is better

That video game (in your screenshot) and table derived from it are based on Advanced Dungeons and Dragons, 2nd edition, which uses the THAC0 system in which lower armor class values are better (and negative AC values are both possible and even better than low positive values).

In the current (5th) edition of D&D, and in each of the WoTC editions, a higher value is better since they are based on the d20 system. Your link to roll20.net is to 5th edition D&D, and that uses a "higher is better" system. That change, from TSR to WoTC, happened starting with the 3rd edition of Dungeons and Dragons, published in 2000. (WoTC bought out TSR in 1997).

Not All D&D Versions are the same. You have to read the label. 😊

Having a high dexterity, in 2nd edition AD&D, makes increasingly useful Armor Class adjustments (-2, -3, -4) as the dexterity score gets higher.

Lower AC is better for that game's D&D version

That video game (in your screenshot) and table derived from it are based on Advanced Dungeons and Dragons, 2nd edition, which uses the THAC0 system in which lower armor class values are better (and negative AC values are both possible and even better than low positive values).

In the current (5th) edition of D&D, and in each of the WoTC editions, a higher value is better since they are based on the d20 system. Your link to roll20.net is to 5th edition D&D, and that uses a "higher is better" system. That change, from TSR to WoTC, happened starting with the 3rd edition of Dungeons and Dragons, published in 2000. (WoTC bought out TSR in 1997).

Not All D&D Versions are the same. You have to read the label. 😊

Having a high dexterity, in 2nd edition AD&D, makes increasingly useful Armor Class adjustments (-2, -3, -4) as the dexterity score gets higher.

Lower AC is better

That video game (in your link) is based on Advanced Dungeons and Dragons, 2d edition, which uses the THAC0 system, and thus lower, and negative armor class values are better.

In the current edition of D&D, and in each of the WoTC editions, a higher value was better since it is based on the d20 system. Your link to roll20.net is to 5th editions D&D, and that uses a "higher is better" system. That change, from TSR to WoTC, happened starting the 3rd edition of Dungeons and Dragons, published in 2000. (WoTC bought out TSR in 1997).

Not All D&D Versions are the same. You have to read the label. 😊

Having a high dexterity, in 2d edition AD&D, makes increasingly useful Armor Class adjustments (-2, -3, -4) as the dexterity score gets higher.

Lower AC is better

That video game (in your screenshot) and table derived from it are based on Advanced Dungeons and Dragons, 2nd edition, which uses the THAC0 system in which lower armor class values are better (and negative AC values are both possible and even better than low positive values).

In the current (5th) edition of D&D, and in each of the WoTC editions, a higher value is better since they are based on the d20 system. Your link to roll20.net is to 5th edition D&D, and that uses a "higher is better" system. That change, from TSR to WoTC, happened starting with the 3rd edition of Dungeons and Dragons, published in 2000. (WoTC bought out TSR in 1997).

Not All D&D Versions are the same. You have to read the label. 😊

Having a high dexterity, in 2nd edition AD&D, makes increasingly useful Armor Class adjustments (-2, -3, -4) as the dexterity score gets higher.