That's funny, I don't see and "I" in Brock Purdy's name, nor in his character.
Brock did not blow out the Bucs nor lead to Brady not showering after Brock's blowout of the Bucs.
Brock did not snuff out the Seahawks.
2 wins over 2 not very good teams playing the position of QB of a very strong and dominant 21 man starting lineup, not including himself, does not mean he's locked up the positon, let alone being the next Joe Montana.
I will say this though about Brock. He has demonstrated leadership qualities, positional knowledge and on field awareness, above and beyond a typical 3rd and/or 2nd string QB. Does he have the arm and physical attributes to take him to the next level? Maybe so, but we haven't seen what happens when he is under pressure facing a strong opponent.
My feeling is that he does have the ability to lead a team. Being the QB on a very good team, yes, but being the QB on a not so good team, is where his limitations will be exposed.