Originally Posted by GoPhils

It's not ambiguous for one purpose because nights and years is the new metric for all LT statuses moving forward, including LTPP. It is clearly stated that MR and SPG nights and years will be combined in the new program to determine LT status.

It is ambiguous for another purpose because I don't believe there is any specific reference at all to points when it comes to Lifetime status on the members.marriott.com page, only a vague mention of "the legacy criteria."

A few posts above when Starwood Lurker posted that answer, he made this post https://www.flyertalk.com/forum/29883733-post1680.html where he wasn't even sure what the Legacy requirements were, so it's tough to take his word as gospel regarding a question about that specific topic. He also made several comments telling MR members to "just call customer service" to find out what you need for LT status, even though there have been several posts here of people trying to do just that and getting multiple different answers.

Starwood Lurker seems awesome and hopefully he sticks around (and/or MR adds more of a presence here), but understandably so he doesn't seem to be as much of an expert on MR yet as he does on SPG.