IITs & BITS are the premier institutes in our country. They have been the go to institutes for budding engineers for quite some time with IITs having a better edge over BITS. However, BITS is no way lesser when compared with IITs.
At the end of the day the graduating engineers want the best offers from top global companies and this is where the IITs provide better w.r.t. opportunities as well as compensation packages. BITS also has more or else same kind of environment where graduating engineers bag excellent offers with similar organization but the compensation however might relatively vary.
On the contrary the individual contribution (efforts) and passion play a deciding factor on the performance of a graduating student at either of the institutes and the institutes on the whole are a platform for learning and showcasing your skills (as and when you learn).
I hope you find this information useful and make the appropriate choice when your time arrives :)
Thanks & Regards,