• The Tejas and MiG-21 represent two different generations of Indian fighter aviation.
• The Tejas is a modern lightweight multirole fighter with digital flight controls and modern avionics.
• The MiG-21 is a legacy interceptor with a long operational history in India.
• The Tejas has the clear advantage in modern air defense and multirole operations.

The comparison between Tejas and MiG-21 may indicate India's shift towards indigenous defense production and modernization of its air force capabilities. The Tejas's advanced features and multirole capabilities suggest it could play a significant role in India's future air defense strategy, which may influence the country's position in regional and global defense dynamics.