This is not true, the aircraft already far exceeds the SU-30 in pretty much everything and in many areas outperforms the F-35 and F-22 in areas such as range, the ability to fire long range cruise missiles, maneuverability, and so on. Now the question is, what "parameters" did the Indians have in mind when the SU-57 far excels in roles compared to its peers. If Indians weren't satisfied with the SU-57s range and strike capability then they live in fantasy land because India, nor anyone else has come close to building a fighter that provides the range, ground strike versatility, maneuverability and low observability that the SU-57 offers. The only way the Indians are getting better range is if they use TU-95s or purchase B-52s, they probably won't find and can build anything more maneuverable and they won't be getting or building anything more 'stealthy' themselves.
In all honesty an Intergalactic spaceship that would travel at light speed and shoot lasers would not meet Indias needs. They complained about every aircraft, be it Rafale, Typhoon and everything in between. The Indian baureocrats have embarrassed themselves and chased off some of the leading aircraft manufacturers in the world with their ridiculous demands and endless complaints, some of which have leaked to media, which was extremely negligent and unprofessional. It's equivalent to a famous celebrity sighning a deal with with Lamborghini or Rolls Roys and then leaking to the press how those vehicles are not good enough for them, how they want a faster and more luxurious vehicle. Of course most of those manufactures will distance themselves if not sue for defamation.