Even LCA is also capable of doing EA from radar.
LCA doesn't need that. Some of the F-35 and Rafale's capabilities are not suitable for the LCA, mainly to do with the difference in electrical power.
LCA's radar and EW suite will be technically superior to what's on the F-35 and Rafale today because these two jets are already a decade-plus old. For example, the LCA's IRST will be QWIP and dual channel, which is lacking on the F-35 and Rafale. LCA Mk2's MAWS is also DC+IIR. And DRDO says they have surpassed the Rafale's radar, while Picdel says the Rafale's radar is superior to the one on the F-35 'cause both have similar performance even though the F-35's radar is 65% bigger. The F-35 probably needs some computing and software updates to achieve peak performance, like TR3. LCA should get a GaN-based EW suite, which will naturally make it better than the existing lot. In terms of computing, all three should end up on par with each other 'cause they all use the IMA design.
But the F-35's new upgrades and Rafale F5 will easily match/surpass the LCA Mk2's avionics by 2030, especially with the use of a multifunction GaN-based radar and the fact that both jets have twice the electrical power. I'm hoping the second batch of LCAs (118-201) will allow us to catch up using AMCA tech. We will probably get a GaN-based radar by 2024-25 or so, so we have to wait and watch on that front. In case it's successful, we can use it on both MKI and LCA. Although I don't believe ADA is planning on introducing the more advanced secondary functions on LCA Mk2, like EA and communications, the GaN upgrade will merely be a replacement for GaAs for better efficiency.
Apart from having some hardware superiority versus the currently operational versions of the Rafale and F-35, the LCA will also have all the software goodies, like active stealth, MUM-T and AI-based sensor fusion, all supported by a high-speed patrol link.
