Differences

Magic
The key difference between traditional D&D and TBB is magic. Magic in a typical setting would be of a spiritual nature. Either from deities or some other metaphysical source, usually requiring long hours of studying and malnourishment. In Pavonas, mages aren't skinny, old wizards with big beards and a book. They are some of the mentally strongest people around, with a mind of steel. Magic is less about remembering incantations in a book, and more about willpower. Some of the most expert mages are capable of incredible feats through the use of Arcyte, an ore mined from the earth. Through this ores consumption, beings are able to use magic.

Technology
Technology is the primary focus on Pavonas. Swords and shields have faded out in place of stronger, more fearsome weapons: Firearms

Aside from firearms, technology also affects the aesthetic of the weapon or armor. A piece of equipment produced from a specific manufacturing company would provide different bonuses and negatives alongside looking different from another technology type. Armor produced in a steam manufactory would be sleek, fitting, and lightweight. Where as armor produced in a coal manufactory would be bulky, heavy, and so on.