Michael Jacobs admitted that Pompey’s overall display probably did not warrant all three points against Port Vale.
But with a flurry of late chances at Fratton Park, he was frustrated that they were unable to snatch the victory.
The substitute found the net shortly after Colby Bishop had netted a penalty, levelling the contest after the visitors had claimed a 2-0 interval lead.
Reeco Hackett then almost grabbed a stoppage-time winner, but the spoils ended up being evenly shared.
Jacobs said: “It was one of those games that had a bit of everything and it could have gone either way.
“I think it was probably a fair result if you look across the full 90 minutes and we probably would have taken a point after the first half.
"It was one of those games that had a bit of everything and it could have gone either way."
“We didn’t quite get to the levels we’ve seen over the past few weeks and their front two caused us problems.
“It felt like everything went wrong that could have gone wrong, but the way we reacted showed the character we’ve got.
“And with the chances we had towards the end, then it was also a little bit frustrating to only come away with the draw.
“I’d missed the chance before I scored and Reeco had a great one right at the death, but unfortunately the winner just didn’t materialise.”
The result leaves Pompey sitting six points adrift of the final play-off spot with just eight fixtures remaining.
Jacobs said: “We’re in a position when we need to win a large majority of our games in order to close the gap and gatecrash the top six.
“While it’s possible for us to get there, we have to keep believing that it’s still alive, so it’s just on to next week.”