MCR v PAN

Since the first week of December PAN SP has risen 55% & MCR 32%. (SIR approx. 25%, POS 28% and WSA all over the place)

There is a lot of talk on here about how the recent drill work may be a game changer for MCR. Why hasn't this been borne out in a similar share price increase compared to a peer, i.e. PAN?

PAN has intersected significant zones of high grade mineralisation, but nothing more than MCR (arguably not as good and of less importance to mine longevity). PAN announced a share buy back as a result of a deflated shareprice - is that the difference?

PAN produces approx. double the nickel to MCR, and had $70m on hand compared with $50m as at June 2014 but that shouldn't be the point of difference.

Both have done well and I'm not complaining, but, any thoughts? (and I am not a believer in 'flying under the radar' and 'the market hasn't woken up to this yet' type of reasoning - with the exception of WSA all these stocks have traced a similar chart).

Cheers