Can PB2 replace protein powder?

I understand that PB2, or powdered peanut butter, has become a popular alternative to traditional peanut butter due to its lower calorie and fat content. However, as someone who may rely on protein powder as a dietary supplement, I'm curious about the potential for PB2 to serve as a substitute. Could you elaborate on the nutritional composition of PB2 and compare it to that of typical protein powders? Specifically, I'm interested in knowing if PB2 contains sufficient amounts of protein and other essential nutrients to make it a viable replacement for protein powder in a fitness or bodybuilding context. Additionally, I'd like to know if there are any potential drawbacks or limitations to using PB2 in this way.