Ummm, no. The Vitamix & the Ninja are both great devices, but they do operate differently.
The Vitamix depends on an uber fast & powerful motor to completely liquify whatever is put in it. This design uses a lot of energy & friction which are converted to heat
The Ninja utilizes a proprietary blade design, it does not spin as fast as the Vitamix & therefore does not create the heat.
I can tell you the Vitamix does make a better smoothie, & will last longer. But unless you plan on making smoothies everyday you have to decide if you can justify a 500 blender