Nope. I would rate it as between f-16 blk 52+ and 60 tech-wise. You are right about the FBW and cockpit not making a good plane. Check the MMR specs, you will find they are comparable to the radr on F-16I. Radar ECM resistance and beam agility matters.The processors of MMR should be comparable to best in world-India has already built processors for BARS which make it similar to RB-E2.Check the specs.All LCA avionics are a more advanced derivative of MKI stuff(check project Vetrivale).
In terms of EW it is equipped with the Tempest SPJ , comparable to the ASPJ on the Blk 60, or the Israeli EL/L 8347 which is more advanced than the El/8222 on the F-16I Sufa and the F-15I Ra'am. Check the specs.
LCA fulfills two of four criteria for 5th gen aircraft:sensor fusion and avionic integration.It could theoretically supercruise considering india has buit crystal blade technology. An AESA is under development, and the Tempest is capable accomadating LWR/J. This combination could help match the JSF/J-12.