Niners screwed themselves from the jump, slinging it all over the yard, when their strength is McCaffrey and the running game. Even on the first pick Purdy threw he could've checked down to McCaffrey and they would've had it first in goal, at a minimum.
The "system QB" label is still very much in play with Purdy. Put him in Chicago, New England, etc and he's an average QB.
Rats were pretty pissed with their self-created "disrespect" in being underdogs in this one. But I guess whatever motivates you...