This is a great comparison giving us a reasonable estimate of the high side potential of PTSC's stock price. If PTSC's market cap does reach $2B (same as Tessera's market cap now) the PTSC stock would be trading at around $4. I think this would be a great money making price.
For those that like to dream and compare the stock prices without consideration of the PE ratios - ask yourself, why would you think PTSC will deserve a 10 times higher PE than Tessera?