All the streams have different advantage and are equally best in their respective domains.
Comp science jis in high demand but skilled candidates are hard to find with latest automation skills like Machine Learning and artificial intelligence.
On the contrary, Aeronautical is niche and very few students opting out making up for high demand jn roles like Aircraft manufacturer, Civial Avaiation Process, Defense procurement, Business intelligence on Universe, etc.
Average salary from top colleges like IIT is in rNge of 8-10lpa from comapnies like Isro, Drdo, HAL.
Automobiles engineering is great for  manufacturing sector and has limited scope pertaining to Automobiles industry only.
Overall Comp Scienece offers lucrative packages and top colleges like IIT Bombay and Delhi, VJTI, BITS pilani, NITs are top class for grrat salary packages.