Heat gave Meyers more than we are paying to DJJ. They didn't make an offer to DJJ.
Meyers is a great regular season floor space and culture guy. He got paid that amount because he is a huge, huge plus for that team in terms of character and culture. Its also a 1 year deal basically and they had money to spend.
They didnt offer DJJ because their wing rotation is stacked. At SG/SF they have Herro, Butler, Iggy, Robinson with Nunn, Dragic and Bradley all having the ability to play SG (And Nunn / Bradley arguably being more SG than PG).
Even w/o injury, Giles has serious limitations. He hasnt developed his shot since HS and he has lost a ton of athleticism. Also seemed to have poor body language whenever he got minutes last season. Still clearly worth a shot, and I wouldnt be surprised if he beats out Zach if both are healthy. But there is a reason he was on the barging bin, just as much as there was a reason we scooped him up.