Originally Posted by Ken Peterson
You are opening Google from US and someone is opening Google in India they both get different results because Google gives different results for different countries. If the person who is using internet from India make use of any software for changing his Ip address of US Google shows the same results as you are getting. So from Indian person the same work can be done now that you are doing from US. Thus there is no difference if you are doing SEO from US or from India or from anywhere in the world.
It is the best answer to your query. There is no difference in SEO whether you do it from US or India. Yes, IP address is an issue but there are many solution to overcome from that. Many tools and software are available in the market which help you to get the IP address of anywhere in the world.