I have a slightly different take on, but I wouldn't lay my hands into fire for this opinion, since I could be wrong.
From best to worst:
- Ares is war himself and he was able to fight against Hercules and Thor because of his skill in the first place (but I could be wrong, since it should also be clear, that that Herc and Thor were holding back on Ares, because of the powerlevel difference)
- Hercules is all about strenght and H2H and he managed to defeat Thor in H2H combat. THor also acknowledged it, while he was not able to break free from Herc's grip.
- Thor with his centuries of fighting experience would probably know how to take down enemies effectivly aswell.
- But now it starts getting tricky. While the upper three characters are experienced wariors, they're also mostly brawlers, who don't really have the finesse of nowdays martial artists - at least in my opinion, so you could basically say that Superman could be standing above them, since he knows about pressure points and learned about take downs and fighting styles. I'm not sure if I saw the Gods using something like that before, so Superman could be even more skilled then them, because they're brawlers, while he COULD be able to take out his enemies via martial arts, but since he also mostly brawls, he is under them.
- Supergirl, since he was tried by Amazons for quite a while, so she should too know few things about fighting effectivly.
- Black Bolt, since I remember him being fairly okay'ish in H2H, since he needed ways to defeat his enemies without using his voice.
- Skaar is a brawler, who maybe knows few tricks but in the long run, it won't be enough in this battle.
- And the worst of them would probably be the Silver Surfer in my opinion. I can't remember seeing him actually using any great H2H abilities. He does not have a background as a warrior and after that he also had far too many powerful abilities, to actually rely on H2H.