The answer is a resounding NO.
2 key issues :
1) Alex Smith will never been good enough to win a Super Bowl to begin with. Kap at his peak in 2012 and before every team caught up to him was way better than Alex Smith.
2) We were never better than the Seahawks once they became a force even when we had Justin Smith, Aldon Smith and Patrick Willis. Overall, they were just that little bit better than us pretty much at all positions. They had a better QB, better RB, better D-line, better secondary, etc.
[ Edited by Rascal on Nov 23, 2015 at 3:50 AM ]