Love is a good quarterback, but this season has shown that he has a long way to go to be a great one.
His situational awareness is terrible. The Vikings getting the FG at the end of the 1st half (despite the horrible offsides flag) is mainly on his shoulders. 1:30 to go in the half, 3rd and 5, and you throw a 30-yard bomb to a double covered WR that wasn't at all open. He makes these decisions SO often.
His strength - deep shots - is also his weakness. He goes to it far too often. And kills drives by doubling up on low percentage plays back-to-back.
The Vikings defense shows exactly where Love struggles.
Early in the game, they pressure, play man, and close to the LOS. Love can't seem to identify the blitz or at least change the coverage to protect himself. Nor does he change routes to give himself a quick out? Brady had some good comments about how the checkdown sometimes needs to be your first read. I don't think Love gets this at all.
Late in the game, they drop into a prevent defense and Love is able to find room to make completions. There he moves the ball and finds WR open.... because the defense is giving it to them. He can't seem to "create" the plays based on a strong defense. I'll say the second half points he scored against the Vikings are a paper tiger. If you can only score when their D is in prevent, then that doesn't say much for you as a QB.
Love has a lot of great physical qualities as a QB, but he needs to become MUCH smarter at QB to really be a SB champion.