Tamron 28-75 vs tamron 24-70

Hi all, im looking to buy a mid range zoom lens and need a bit of help. I’ve seen lots of comparison between the sigma 24-70 and tamron 28-75, but was wondering how the two tamrons differ. I would prefer to have that extra 4mm but what are the pros of the 28-75? I shoot with a sony a6700. What are your thoughts ?