This is an absolutely valid comparison but then someone might come up with the argument that number of scientists doesn't matter, what they do is more important
So let's talk about R&D; the end result of everything from number of employees to budget to the academia
Combining plethora of topics from PPE suit to auto-loader for MBT, multiple labs and also scientist working on deputation with other institutions these are the stats for number of DRDO patents published in last 5 years. 2023 - 20, 2022 - 79, 2021 - 54, 2020 - 18 and 2019 - 38
For the same period these numbers are from SIG Sauer; a US based firm that's concerned only in firearms, ammunition and optics.
32, 20, 28, 23 and 40.
That's just a single firm engaged in a fraction of fields DRDO is. We should never compare it with DARPA, theoretically the peer but if one wishes then it'd be like
1090, 1074, 103leave it
We seriously need to focus on drastically improving our R&D otherwise...