the answer will depends upon lots of factors such as the college's you are interested in and the career options .many have told me that yes  both are equivalent but i think doing m.tech separately will be of little higher value then integrated btech. as i have seen less placements in integrated b.tech in conparison to separate m.tech .however if you are doing integrated m.teech from a very good college then this will be enough and equivalent to separate m.tech 

please send this question again so that you can get more answers of you question from otheres also 

Hi ! I can provide you the answer for this. Well, doing 4 years of b.tech and then doing 2years of m.tech posses much more value than dual degree of b.tech and m.tech. In this case getting a product based company is more liable and easy to get. In this case you will have two seperate degrees which will give a good impression to a product based company. So hope you understand and best of luck to you.