I'll elaborate more in the future overall, but how good are Armatrong's fireball and how good is he with them?
Because Zangief not only has moves meant to deal with them (even some to dodge), but has a record of dealing with projectiles users for years, and we're speaking of people such as Ryu, Ken, Guile, Rashid, Laura and potentially several others, all of whom have an array of projectiles and are extremely skilled in using them.
He can also just jump, as he appears to be much more agile that Brad, who also doesn't seem to have many counters to either flying attacks or being himself thrown into the air and then exposed to all other throws.
Zangief can also sort of close the distance though his air manip (although works in close) and the Ruler's Staying Hand, which albeit was only used once, still remains an option.
Also, does this Brad have his arms? Because if not, he might even struggle to just get off the ground if Zangief manages to bury him like he does with his SFV super.
Brad does indeed have super stamina, but having his body and head repeteadly crushed onto the floor by someone who has higher LS and AP should worn him out eventually, especially if he enters a streak from which he can't get out.
Also wanna note that
Burning Head Slide is one of Brad's main moves in this key, a sliding head strike aimed precisely at the opponent's knees would exploit Zangief's sheer size and muscular build and porbably make Zangief stumble or fall.
And while Zangief is momentarily down, Brad can capitalize on the opening by following up with his stronger moves.
E. Honda, who is Zangief's long time rival, uses a quite similar technique, and Zangief still has a record of dealing with people who employ much crazier techniques in terms of acrobatics and agility.
Also, Brad might just end up being stopped or caught unless he times and aims very, very well.
I should add that Zangief also has means to increase his strength, notably a bunch of special and V techniques.
TNT and molotovs would indeed be problematic, but at the end they aren't too different from other projectiles, leaving the option of dodging them in time.
Also, the TNT might even become a double edge if Brad gets stuck in close and rysks to blow himself up too.
While entirely possible in a number of occasions, Brad could also struggle to consume items if busy dealing from close range, or remain open to yet other attacks.
Brad's profile also states this which, depending on the actual degree, would work to his disadvantage.
Although skilled in Martial Arts, he's deeply scarred and traumatized by his past experiences, hindering him quite a bit