Yes and no. The tensile strength is actually similar. Kevlar has a tensile strength of 3620 MPa, and Dyneema is rated at 3600 MPa. However, since Dyneema has a much lighter density than Kevlar, it has a higher strength-to-weight ratio. When measuring strength-to-weight, Dyneema is 15 times stronger than steel, whereas Kevlar is only 5 times stronger than steel.