Your right that a high RSI is a bad thing, but then you have to consider how long it was oversold too. I believe balance will come into play soon. Just when is the question.
Well I'm afraid Wilder has left alot on the table because that is where the power zone starts. Also, fundamentals are a much better driver than technicals and can drive stocks in an uptrend for prolonged periods and within a high RSI range. 70 is where things get exciting.