Wins are a team metric. The Ravens really sucked all over. Bad defense, dropped passes, bad coaching, bad 4th down play calls going 0 for 4, bad red zone play calling. Didn't help that Ingram wasn't healthy and they never got the RB rushing game going.
The Titans didn't shut Lamar. He still threw a ton, still ran all over them. What they did was play smart in situations (4th down) and took away the middle of the field which is where the Ravens have killed teams and scored a lot of points. Vrabel very Belichick like in taking away a strength and trying to exploit a weakness. Jackson is not a great sideline thrower and they capitalized.
Lamar will eventually need to win playoff games, but young QB's loosing playoff games is common. Playoff success is more of a career stat. He's a 23 year old with a very long time to play If he stays healthy. Making too much of one game is stupid for a kid this young that cleary has immense talent.