I agree with that statement completely, that's why I bought some heads a couple of days ago instead of oppies. If I get a few pips out of them and oppies haven't moved/dropped, I'll be very tempted to exchange these heads to oppies if I can at say 0.6c or perhaps even 0.7c (would depend how they are trading).
I was very happy to average slightly above 4:1 price of my heads sold for oppies purchased, hold 60% more oppies than heads and also take some cash off the table. Clearly this ratio very recently has mostly been under 3:1.
I'm just pointing out that the oppies have had very little supply and higher demand so far, which to me shows investors are very bullish when looking to a several month plus time frame. But if everyone buys heads now at 2c, then tries to flip them to oppies at say close to 3c, we may still see the oppies trading higher than expected through simple supply and demand (assuming they are still being tightly held).