Why would he be swinging though? He can take his time, it's not like Fury could hurt AJ. He would just tickle AJ with his Shots.
That's because Wilder is a terrible boxer, AJ is an olympian. He can delivery way more power shots. So best believe he can KO Fury, TKO, Stoppage, RTD.. whatever you want to call the destruction.
If Fury doesn't improve his defence (it's way off where it was e.g against Wlad) he would lose against most of the elites. He doesn't have the power to keep decent fighters off him without a top class defence. Much as i think Windmill is a poor boxer , he'll not be so tentative against Fury next time and will catch him - although i doubt we'll see the rematch next year.