Why does 2.0 not give me any energy?

I bought 2 of the new tubs, Nuka Cola and The Juice and they taste great and it’s less powdery which never was a huge issue for me but they feel so much less potent that any of the previous flavors did caffeine wise. I still have a tub of the original formula and just tried it this morning and it’s a very obvious difference in how I feel. Anyone else notice this?