Hmmm .... I just reread my previous reply and I cannot see anything that refers to LR being inferior to Photoshop in any way.
In order to print anything in PS, you have to find and open it and load it into memory. In LR you can select one or hundreds of images and click "Print" and all will be printed.
In order to print anything in PS, you have to first render the raws before you can even start with #1 above. In LR, the rendering takes place as one prints. Select and print.
In Photoshop, if you want output specific edits, you have to soft proof and create the edits on layers (if you're smart), and do so for each output device. In LR, you build Proof Copies, something you don't seem to be aware of: they take up NO space, they contain only the output specific edits. The soft proof is memorized as is the rendering intent as this affects what you see of course. AND the output specific edits are all stored with metadata that takes up on space.
In the Print module, the edits and rendering intent is honored.
In the Print module, you can build as many print presets as you wish (again, virtually no space taken up) which saves EVERY print parameter including size of paper, paper type and all the stuff mentioned above so you can again, select any number of images, raw or otherwise and make a print exactly as the preset defines. That simply isn't possible in Photoshop.
The soft proofing in Develop is much better visually in LR than PS if for anything else, how the bkgnd is not as white as the GUI (the surround is grayed back if so set). To get this in Photoshop, you need to work in Full Screen mode.
LR provides adaptive print output sharpening! Based on the image size and output resolution AND the capture sharpening applied to the original; raw or rendered.. PS requires you do this on each image manually.
LRs Print module provides info such as page bleed, margins and gutters, dimensions on-screen. PS doesn't.
LR provides options for automate Rotate to Fit and Fill. PS doesn't.
LR provides metadata overlays ON the printed output you can select or even the users Identify plate. PS requires you manually type that in using a Type Layer.
Further, LR provides page options on the print (Page number, crop marks and page info).
You want to gang up 6 images on one page. Maybe the same size, maybe different sizes on one page You can build as many Print Packages or Custom Packages, again with all the preset stuff mentioned above. In Photoshop you have to open each document, size it, move it into a canvas etc. ANYONE making such packages will find LR to be vastly faster and superior than PS!
There is simply no comparison between what one can do in LR's print module vs. Photoshop which from day one has and continues to be a 'one image at a time' workflow. LR isn't.
I'm probably forgetting more features of the module and hopefully if so, others will chime in. Again, IF you print more than a few images per month, let alone week or day, LR's print module is worth the price of admission.