No there is no comparison Velocity kit is much better and more powerful.
Velocity spent time and resources to get the kit right for Haybusa all factors were considered in their design .
However, my brother did not take into consideration any factors all he wanted is to turbo power his bike and that's what he did. Velocity Kit looks great in fact my brother's kit under the fairing does not look 10 % as good as the Velocity but I still give him A for effort and persistence
.
He is not going to dyno it cos he is afraid to admit that he was wrong regarding many issues during the fabrication process . So the short answer Velocity wins