Netra MK1 with giant 6 meter brick of antenna operating in S-band track an aircraft of similar size at ~500km, and this is when it diverts all cooling to a single array. How do you actually believe that smaller and less powerful radars operating in X-band would pull such range figures out of thin air?
Netra Mk1A has 8.2mx0.9m array. Virupaksha is 0.87x0.92m.
X band has a wavelength of 3 cm versus Netra Mk1A's S band wavelength of 12 cm.
It means for Netra to match the performance of Virupaksha, it needs to be 4 times bigger, like ~4x4m. Essentially, all these 4x4m shipboard S band radars are as good as 1x1m X band radars.
Since Netra is a rectangle, it is twice as big horizontally in relation to wavelength, which means it has superior vertical orientation, which means it can discriminate targets by angle, ie, direction. But it's absolutely terrible at telling the altitude of the target because its smaller side is just 0.9m instead of 4m.
Plus S band is better at volume scan and finding angle and bearing compared to X band, whereas X band is better at range, fire control, identification etc. Since Virupaksha is symmetrical, it is a balanced design. Essentially Netra acts as a complement to MKI. It tells the MKI how far and from which direction it can find the enemy, and MKI then goes looking for it.
While Netra is outranged by Virupaksha, it is still important because it outranges RBE2 AESA and Uttam series.
Plus, unlike L and VHF, S band can provide fire control. So it's an advantage when fighters have smaller radars.
Netra can also cue ultra long range missiles to target AWACS, transports etc.
Netra has other uses too which fighters cannot perform at the moment, like carrying more antennas and communicating with more number of allies, carrying more processing, more storage etc. There's crew and number of consoles for EW and battlespace management as well. All sorts of non-radar advantages.