This deals with the myth, that the Rafale deal got India a far more capable fighter than in the MMRCA tender. The Indian specific customisations are not negotiated by any GoI, but are based on operational requirements of IAF and depending on the capability gaps the fighter has. Both the upgraded Mirage and the Rafale got similar customizations, which also would had been the same, if the MMRCA had been fixed.
The only difference therfore is the fact, that due to the delays, now the F3R was available, which however hardly adds any meaningful capability, other than Meteor and software upgrades.