Complex sentence: Historically, CWAT/DAWT designs have failed to overcome this hurdle as compared to more conventional HAWT designs, however, there is reason to believe that this equation may be shifting towards these new designs.
Split into simpler sentences: Historically, CWAT/DAWT designs have failed to overcome this hurdle as compared to more conventional HAWT designs. However, there is reason to believe that this equation may be shifting towards these new designs.