In terms of aesthetic appeal and durability, rosewood is generally considered better than dark red wood. Rosewood is prized for its rich, dark red color, intricate grain patterns, and exceptional hardness, making it a favorite for high-end furniture, musical instruments, and decorative items. Dark red wood, while also visually appealing, may not match the durability and rarity of rosewood.

Rosewood's superior hardness is a significant factor in its preference over dark red wood. According to the Janka hardness scale, which measures the resistance of wood to indentation, rosewood typically scores between 2,200 and 3,200 pounds per square inch (psi), depending on the species. In contrast, dark red wood, such as mahogany, typically scores between 1,150 and 1,820 psi. This higher hardness makes rosewood more resistant to wear and tear, making it a better choice for long-lasting furniture and instruments.

Additionally, rosewood's rarity adds to its value. Rosewood species are protected under international agreements due to their endangered status, which makes them more difficult to obtain. This scarcity contributes to the higher cost of rosewood products, but also ensures their exclusivity and desirability. Dark red wood, while also valuable, may not command the same level of prestige or price as rosewood.

Furthermore, rosewood's acoustic properties make it a preferred choice for musical instruments. The dense and resonant nature of rosewood contributes to the rich, full-bodied sound produced by guitars, pianos, and other instruments. Dark red wood, while also capable of producing good sound, may not match the tonal qualities of rosewood.

In conclusion, rosewood is generally considered better than dark red wood due to its superior hardness, rarity, and acoustic properties. While both woods have their merits, rosewood's combination of aesthetic appeal, durability, and exclusivity makes it the preferred choice for many applications.