There are three things that may interest you in this video (timer is correct) :
1) Pulaski aims at Carl with a Glock 17 (he's not seen with a Colt .45 so the Glock could correctly be his service weapon even if it isn't obtainable in game).
2) We can guess by the rims that the LSPD cutscene car is a beta one.
3) The more important one is that Pulaski hands CJ a different (beta) camera that the one you'll be using in the next mission.
For High Noon, in addition to what's already been said, Tenpenny grabs a different shovel than the in game one but it could just be a design choice.
"- Added final police biker texture to chop cop,"
The cop incorrectly wears two police badges on his uniform.