A friend of ours asked me this same question recently - but for us, we bought at Deep Creek 5 years ago because we liked having the lake in the summer and winter weather (in addition to the hiking/etc). There’s just way more to do year round having the lake right there in my opinion.
And Canaan doesn’t get 2x for every storm - they certainly kill it with upslope but averaging 110” vs 180” isn’t a big deal IMO (if it was 40” vs 180”, sure that’s another story) - I got 18” from the weekend storm vs 20” at your location. I’m not sure I would have noticed the difference…::shrug:: YMMV
ETA: forgot to say, if the sole reason is skiing, definitely agree that Canaan/Timberline is far and beyond (and its not even close) a better option than Wisp. I suck at skiing so Wisp is good for me as I'm doing pizza down the hill lol