Wenge is generally considered better than Small Leaf檀木 due to its superior durability, hardness, and aesthetic appeal. Wenge, also known as African Walnut, is a dense and heavy wood with a distinctive black and brown striped pattern. It has a Janka hardness rating of 3,680 lbf (pounds-force), making it one of the hardest woods in the world. This high hardness makes it highly resistant to dents, scratches, and wear, making it an excellent choice for furniture, flooring, and other high-traffic applications.

In contrast, Small Leaf檀木, also known as Chinese Elm, has a Janka hardness rating of approximately 1,740 lbf, which is significantly lower than Wenge. This lower hardness makes Small Leaf檀木 more susceptible to dents, scratches, and wear, which can reduce its longevity and aesthetic appeal over time. Additionally, Small Leaf檀木 has a less distinct grain pattern and color variation compared to Wenge, which may not be as visually appealing for certain applications.

According to the Wood Database, Wenge has a moisture content of 6-8%, which is ideal for maintaining its structural integrity and stability over time. Small Leaf檀木, on the other hand, has a moisture content of 8-12%, which can lead to warping and cracking if not properly dried and stored. This further emphasizes the importance of Wenge's superior durability and stability.

Furthermore, Wenge is known for its excellent resistance to decay and insects, making it a more suitable choice for outdoor furniture and other applications exposed to the elements. Small Leaf檀木, while also resistant to decay and insects, may not be as durable in outdoor settings due to its lower hardness and higher moisture content.

In conclusion, Wenge is the better choice between the two due to its higher hardness, durability, and aesthetic appeal. Its superior resistance to wear, decay, and insects, as well as its stability, make it a more reliable and long-lasting option for various applications.