I disagree, that is, IMO, the hardest way to tell the difference. It varies based on lighting and on a chip-by-chip basis. Some Paulsons look like the have really shiny hats, and some Burt-made THCs look like they have pretty matte hats. Just look at the spots, edges, inlay, or colors to tell. More specifically:
If the spots are curved inwards, 514, a dovetail half-pie, or a quarter pie that extends past the inlay, you know they’re Burt-made. And alternatively, if they’re very imperfect, have V-shapes, half-circle shapes, or a quarter pie that only extends to around the hats, you know they’re Paulson-made.
If they’re mint but the edges are slightly rounded/they don’t look like they make a continuous stack (I don’t know how else to describe it) and don’t have any lathe marks, you know they’re Burt-made. And alternatively, if the edges are very sharp and do have lathe marks, you know they’re Paulson-made.
If the inlay has a small, almost pixelated effect around the edges, you know they’re Burt-made. And alternatively, if the inlay is perfectly smooth around the edges, you know they’re Paulson-made.
If the colors are all pretty dull, they’re more likely to be Burt-made. And alternatively, if the colors are vibrant and fluorescent, they’re more likely to be Paulson-made.
If all else fails, then you can look at the hats, but I think it’s dumb that the recommendation for everyone to tell the difference is to look at the hats. It’s impossible to be 100% sure just from a photo that shows the hats, but these other things are easy to spot and much more reliable.