Supes grows more than almost any character in comics, except when he's shown to have gotten stronger, people tend to ignore it. People still try to put Supes and Thor as equals, when all evidence shows something entirely different. I think Supes is sronger, faster, and more durable than; sure Thor has also gotten upgrades over the years, but they aren't as constant as Supes.
As for this fight, I see Supes taking this. He's way faster, Thanos will never be able to hit Supes physically if Supes doesn't want to be hit, and if does get hit, so what, he can take a punch, I believe him to be just as durable as Thanos if not more considering the attacks and blasts he's survived over the years that's way more impressive than Thanos. People give Thanos the higher durability because of his fight with Odin and Tyrant...okay so, Supes has also faced skyfather level beings before and was able to hold his own. But people are going to ignore that also right?
Than people try to make it seem like Supes won't be able to harm Thanos physically, because of his fight with Odin. Just because he took hits from Odin doesn't mean characters lower than skyfather would be able to hurt him. And how many times was Thanos hit anyways in that fight? Not that many, it was mostly an all out energy blasts fight wheather than a physical battle, and was interrupted. With Supes speed and strength which is more than enough to off Thanos, I see this match favoring Supes.
As for Thanos having better energy projection, what good is it going to do. Shooting energy blasts at Supes isn't a winning strategy, as Supes is fast enough to dodge them if he wants. This guy run circles around DS OB, an attack that follows it's target; Thanos energy blasts should be less difficult.
Sorry for double posting.