SSG-N is the only SF branch which is modernizing with high pace. It's not clear but seems like they are rocking Crye look alike plate carriers
SSW has been doing decent in this regard too, obviously it’s much easier for either to do given they’re both smaller than army SSG even if you combine and double them. The navy especially has had a lot more budget to spare recently.
Army SSG should start making some stronger distinctions by now (they Did with ZATU but imo not strong enough), if they want to keep an SF force that large, then by all means, they should, it’s an advantage. But start equipping the best ones with the best gear instead of trying to get everyone the same gear for which you’d need so much more money, these SSW and SSG(N) modernizations weren’t cheap.
Basically, the army needs to enforce the tier system stronger, they’ve already started work on it, ZATU and some others are getting the better gear and will be the higher end, while The rest, depending on their role, can be of more general use.
Another reason army SSG is bigger is because they have dedicated roles, SSW and SSG(N) train everyone for everything, much like usual SFs and SEALs.
SSG adopts the approach of making specific companies and units for every task, yes they’re all given general training of everything, but their advanced training corresponds more to a specific thing. Like ZATU for AT, Musa for sea-borne Ops, Powindahs for mountain/hill Ops etc. This may make their individuals less well rounded than the other two, but for their specific task they’re absolutely the best of what we have.