Abhishek Bachchan is generally the bigger star overall. He has had broader mainstream visibility, stronger box-office recognition, and more sustained industry presence than Rahul Khanna, whose fame is more niche and style- driven.

Quick take

  • Abhishek Bachchan has been a more prominent Bollywood name for a longer time.
  • Rahul Khanna is well known, but more as a cult-favorite actor/model with a lighter film footprint.
  • If you mean mass popularity and recognition , Abhishek wins.
  • If you mean cool-factor or fashion appeal , Rahul Khanna often gets a lot of attention.

Public profile

Abhishek has had major visibility through films, media coverage, and his Bachchan family name, which keeps him in the wider public eye. Rahul Khanna has also stayed relevant, but his profile is more selective and less driven by big commercial films.

Simple verdict

For most people, Abhishek Bachchan is the bigger star.

TL;DR

Abhishek Bachchan > Rahul Khanna in mainstream stardom, while Rahul Khanna has a smaller but stylish niche following.