it would not be the end of the world, but it would continue to show a weakness in huge game outcomes, which teams typically need in the playoffs.
the team has to prove itself to us. we can't do it for them. I remember 92 , when we had just come off a 7-9 record or something like that, and 2 years previous our worst record ever.. (1-15 i want to say? maybe 3-13 i can;t remember.)
anyway , no one realized we were going to win a SB until we did. sometimes it sneaks up on you when they are rebuilding... BUT they went 13-3 , I think, and they won big games.
Basically, you don;t know for SURE if your team is good enough , until it is lol.