Wolves fell behind early to Nordi Mukiele’s header, but were handed an advantage when Dan Ballard was sent off shortly after.
Santiago Bueno equalised early in the second half, yet despite creating several chances, Edwards was disappointed his side could not find a winner and secure all three points.
“I’m frustrated, and all the lads are as well. It was obviously challenging, but the overriding feeling is a lot of frustration,” Edwards told the club website.
“We did create some good opportunities, we did some scrambles, there was some moments where we didn’t get the header or the shot away, but we’re there and maybe it should have been a goal, but it wasn’t.
“We tried to push, we tried to get more forwards on, and Sunderland look good when they’re in that sort of block anyway, and I’ve gone up against them last year in the Championship, where they’re really effective with it and when they needed to be this year they’re very tough to break down. Then with this situation, I think the pressure’s off and then they go down to 10 and although it eases on them, it ramps up on us even more
“We could all feel the energy in the stadium and it probably made the players a little bit more anxious than we would like, but we got back in the game and then we were disappointed not to have got the other goal to take the win.”