Extrapolations have and will continue to fail to accurately predict what will happen next. Sure you can get something that is "close," but it will never be the same. Irrational markets tend not to follow the exact same thing every time. I'm talkin about it having more gradual run ups one bubble, or hard crashes the next.
They all have the same general characteristics such as peaks, bottoms, bull/bear traps, and stagnant periods.

Always look to the past for information, but never use it as guidance. The conditions that happened in 2012 are much more different than they are in present trading. Sentiment, news, and technicals can all be so much more different.