I noticed some of those same things too. The lume on the 12 doesn't look smooth and the lettering on the logo doesn't seem as crisp as it should.
Same with the lume on the 6. The "Swiss Made", "30", and red paint on the seconds hand all do not look as sharp as I'd expect.
One other difference, which may or may not mean anything in terms of authenticity is the TAG Heuer logo on the case back. I noticed that the render on the official TAG Heuer website has the old style "TAG" with arrows.
Looking at some random pictures of the watch on the internet, most have the newer style TAG, but some also have the older style TAG like this one.
But as there are so many fake F1s out there, it's hard to know which are real or not just by looking at random photos. The newer TAG logo case back could have been a running model change.