Arri Raw Anamorphic 2560x2145 footage importing at 1080, Square Pixels?

Hey there Adobe Forum! Got a bit of a head-scratcher here.

I'm editing a project that was shot Anamorphic in Arri Raw on an Alexa Mini. The media clips are the RAW .MXF files, NOT ProRes.

When I import one of the raw clips into Premiere Pro (v12.1.2), it claims via the Clip Properties that the clips is 2578x1080 (1.0) (Square pixels). The image looks perfectly fine (no squeezing). This seems odd to me, because being anamorphic I was pretty sure the pixel resolution would need to be 2.0, and the pixel dimensions would be different so I:

If I bring the exact same clip into DaVinci Resolve, the attributes I get are: 2560x2145 (Cinemascope PAR (Pixel Aspect Ratio)).

Now, the DaVinci specs seem accurate to me. My question is: why is Premiere telling me that the same exact clip has different specs than Resolve is?

To compound the problem, the DP is asking me to have my working sequences in Cinemascope Pixel Aspect Ratio (2.0), and export my edit at 3414x2198 Squeezed in ProRes 4444 for color (Colorist would then desqueeze on his end by applying the cinemscope PAR again).

What is going on here? Why am I getting a different reading on the same clip in Premiere as I am in Resolve? Looking at older posts and videos, it seems like typically, when bringing anamorphic into Premiere, I'd need to tell the clips to "Modify>Interpret Footage>Pixel Aspect Ratio 2.0" in order to get my clips looking groovy, but luckily (sort of?) my clips already look great on direct import and I don't need to modify anything.

Anyone's help and insight would be much appreciated! Thank you so much! 

Premiere:

Resolve: