Cavitating jet can treat much wider area than normal water jet, i.e. water jet in air.
When the cavitation is optimized, the impact intensity of cavitating jet also bigger than that of normal water jet.

Fig. Treatment area
(Injection pressure, nozzle size and injection time are same.)

H.Soyama, Increase of Ability of Water Jet by Using Cavitation Impacts and Its Application to Peening of Material,
Journal of Jet Flow Engineering, Vol.16, No.3, 1999, pp.22-28.