Making Windows Image Without Sysprep Generalize tools, is Wrong?

I have a question about Windows Image, if i took Windows Image Without Sysprep (Generalize) tools, I installed all apps and Restated machine and took image with Acronis , and Restored this image in others machines, is this steps Wrong ?

Should I make Sysprep (Generalize) ??

Best Regards,

Hany Barbis