They developed things which can be used to actual war. Things like K9 Howitzers,black panther,bihoo Sam systems,asks,cms, top end destroyers etc. Where we focused on things which are not supposed to use or may not use items.The Brahmos M and the Korean version are simply licensed versions of an existing Russian missile. The resized Russian version of Brahmos M finished development years ago.
So there's no point in comparing the industrial standards.
The Indian military is lagging behind the Korean military in deployment of this capability. The Indian MIC is ahead of the Korean MIC irrespective of their deployed capability.
I don't think we were ahead of the Koreans in many fields. They had a developed MIC before we did. Like, when we started the Arjun program, the Koreans were inducting their own tank. They already had a very well developed ship building industry before we even began, and so on. In some other areas, our priorities were different. For example, we chased after SSBNs, they chased after SSKs.
But when it comes to missile tech, they are woefully behind. Their CMs are foreign, their SAMs are foreign, their BMs are entry versions, and so on.
They will start test flying AMCA type fighter from next year onwards, they already presented it infront of IAF chief,trust me they will offer their product to IAF in few years. Where is our AMCA?