Wonder Man:
While both were extremely pissed off and at an equal level of strength, WM and the Hulk fought until Hulk punctured WM's skin, causing a nuclear explosion, resulting in the death of both of them. (Last Avengers Story)
Obviously Wonder Man was stronger than the Hulk, because, even with a hole in his chest, Hulk was unable to break WonderMan’s grip and escape.
Arkon, who fought Thor, says that he ver felt such mighty blows, even from Thor:
He did beat the blob in an avengers special
He did beat the abomination
He did beat namor in the avengers series.
He was toe to toe with hercules in the avengers series.
His fists have been compared on several occasions to Mjolnir in power.
He beat the shit out of 20 second-rate Ultrons at the same time.
Other than Hercules and Thor he is considered the strongest Avenger ever.
Has knocked out the Awesome Android in 2 punches.
Wonder Man’s fist is compared to Thor’s hammer:
Has destroyed It, the Living Colossus.
Has gone toe-to-toe with Pagan, who previously beat down all of the Avengers before WM arrived.
In JLA/Avengers got the better of Kyle Rayner - the Green Lantern!
He stopped a printing press that was set for 50,000 tons.
He lifted a Sky skraper, that was thrown at the Avengers by Nefaria
Note he said that Pagan was supposed to be as strong as Count Nefaria,
Durability feat. Knocked through a planet and then through a sun: