Uh, no, the defense of the 49ers didnt have anything to do with Kaep's TD throw. Not sure what your point is.
You can survive with him running, but you die with him throwing. 2 INTs in the 4th quarter. Wasting that defense.
I was thinking the whole drive about how much they might regret not taking the fg earlier in the 2nd half. But the league's best secondary comes through