It has more to do with management and acquisitions than sheer number, I believe.NSG also has a high degree of standardization in terms of equipment and gear followed by MARCOS and GARUDS but Para SF is a complete chaos with no uniformity among members within the same unit which I believe is attributed to their high numbers (>10k). Though NSG has around 7.5k operatives in all 5 hubs combined, they're under MHA which has a more streamlined approach towards acquisitions
NSG lacks a large inventory of weapons with greater stopping power. The most common guns in their service is the H&K MP5 and the MP5 SSD which are now about to be systematically replaced by the SIG MPX. There is the SIG SG551 carbine in 5.56N caliber, recently acquired SIG DMRs and the occasional AK here and there. But a large common inventory of large caliber assault rifles is still absent. Interestingly the appearance of the FN Herstal SCAR-H/L is becoming increasingly common. Makes you wonder if they are still running trails on it or was it acquired in quantity. I really hope they would acquire it in quantity though. I would also like them to give the SSS Defence offerings a shot.NSG should look into Sig's new rifles that were fielded for US Army's NGSW
I don't worry much about NSG and their firearm acquisitions, if the US trials work out I am sure SIG would offer the same to the NSG and the broader armed forces. The NSG has a procurement system that actually works. I worry about the getting quality gear for the NSG, especially plate carriers, combat shirts/pants, high cut helmets, helmet mounted optics, eye and ear protections etc.
In the recent years I've seen increasingly better quality plate carriers but not enough standardisation yet, high cut helmets are becoming very common, eye protection is now standard issue, increasingly better combat t-shirts but no standardisation yet. But problems remain. Hands free comms are increasingly common but ear protection is non existent, no modern combat pants yet, combat t-shirts and pants doesn't have integrated pads yet, the pouches on plate carriers are soggy and not rigid as they should be, helmet mounted NVGs are still stuck at mono tube NVGs. No binocular NVD is available, let alone quad tubes. Also for a force that insists on wearing all black all the time, they don't mind wearing golden name patches. Why would you do that ? It is such an archaic practice, like the army teaching infantry men to charge in with bayonets.