Wonder Woman doesn't have the Gauntlet of Atlas here. She wasn't stated to have it in the OP, thus she's not carrying this item in battle. It's not a part of her standard gear; she doesn't carry it often.
" Gauntlets of Atlas increase Wonder Woman's strength 10 times and stamina/durability by 10 At that level she is well beyond supermans level and probably darksieds level of strength.... Which probably will allow her to inflict adequate amounts of damage in her attacks
Would be difficult. He can maneuver them around her bracelets. She wouldn't be able to deflect them for long if she could.
"Deflecting his Omega Beams back at him
" When was CURRENT Wonder Woman ever beaten almost to death my Mongul
In Infinite Crisis, she was getting knocked around by Mongul Jr. and couldn't do much against him.