Maybe Brady is just a beast and his foot would have to be dangling off to take time off at this point of his career/season. .
This is my very amateur opinion on Collins, oblique strains are very much like a minor groin sprain/strain. Can you play on it? Yes, but that really depends on your pain treshold. It may not hurt one second , and a slight movement that's out of the ordinary will send a painful twinge throughout your body. It's not a serious injury but one that only 'goes away' with complete rest and rehab routine (massages, ice, heat). All that said Collins is an animal and I don't think he will miss time. He may need a few more breathers than usual to deal with the pain.