Yup, I hear ya Trades. I follow the price/volume action on both the NYSE and TSE for Encana but use the NYSE chart I posted to make decisions on entry/exit. As you suggested, it is good to apply that advice to any equities that are cross-listed as it removes the currency effect from consideration. Also true that the U.S. side usually leads moves for such companies.
As for Encana, I agree with you that $32.65 is a significant price point. I accumulated an initial position in the $31 area (basis U.S.) last month after news of the Chinese deal broke, but will add to it if/when it breaks (and holds) above that target. Will also add more on a retest of the 50dma this week, if it comes. There is more chart support below that as well around the $30 area, coinciding with the 200dma.
Worth noting that ECA goes ex-dividend on Friday (March 11) so for those wanting to get in on that juicy 20 cent U.S. dividend, lol, this is the week!