The Murano looks good enough for me to keep it on my list until I can start test driving, but I'm not sure how much the two vehicles will be cross-shopped. From a pricing standpoint they'll go after similar customers, but the Murano is dimensionally closer to the MKX than the MKC. That extra foot in length will keep some people from considering both vehicles. I think more potential customers will compare the Murano to the current MKX, or more likely the Edge.
I have a feeling there's wont be much cross shopping, someone who's looking at a Lincoln seems like the type that really wants a Luxury SUV which the Nissan isn't, more like Infiniti.