Moto G Turbo is as same as the Moto G 3, almost all the specification and the feature of the Moto G Turbo is as same as the Moto G3, so whether you buy Moto G3 or Moto G Turbo we can say that you are on the same page.
The only difference btween the Moto G3 and Moto G turbo is processor. Moto G Turbo is come with an qualocomm 615 processor which is better than the Moto G3 400 processor, the looks of the phone is same as the G3 there is not much changes in the look. The other specification is also same as the Moto G3 specification.
For me if you buy a Moto G Turbo Or a Moto G3 you buying both phone in one phone the only difference is of the processor but I will recommed you to buy Moto G Turbo becouse the 615 processor is much better than 400 processor in almost at same price.