Hanson, who scored twice in Saturday's 4-0 win at Peterborough, headed the all-important second goal after Tony McMahon's brilliant first-half free-kick as Bradford climbed to within three points of the Sky Bet League One play-off places.
"It's great for him
Hans backed up his performance at the weekend
He's got four goals in three games and that's a good return," Parkinson said.
"I think he would be as effective at a higher level personally
He just works so hard for the team, he was absolutely tireless in his efforts
"When he's in the mood, like he has been in the last couple of games, you wouldn't want to mark him
He's a very difficult player to mark."
Parkinson also saluted dead-ball specialist McMahon, whose 17th-minute free-kick set City on the way to their first back-to-back league wins since November.
"The first goal is always very important in games like that and it was a moment of real quality from Tony McMahon," Parkinson said.
"Those moments of quality to open games up are absolutely crucial
It was a great free-kick against a very good keeper.
"You've got to say (Daniel Bentley) is one of the best keepers in the league, if not the best
It was a magnificent free-kick."
Southend striker Noel Hunt's early rising shot forced a brilliant save from Bradford goalkeeper Ben Williams in the 15th minute, but McMahon curled home from 25 yards after Cian Bolger's foul on Kyel Reid two minutes later.
Southend threatened through Stephen McLaughlin soon after the break, but Bentley blocked brilliantly to deny McMahon his second at the far post before City doubled their lead in the 74th minute
Hanson's header from McMahon's corner bounced down off the crossbar and rebounded off Bentley over the goalline to seal victory that lifted Bradford up to eighth place in the table.
Southend's play-off hopes were dealt another blow following Saturday's 1-0 defeat at Scunthorpe and boss Phil Brown bemoaned his side's vulnerability at set-pieces
"You can talk about systems and personnel, but at the end of the day we conceded a set-piece on Saturday and it's cost us three points and we were the better team," Brown said
"We improved on the day but it doesn't matter, it was a set-piece and exactly the same has happened here.
"The set-piece was the difference between the teams in the first half and a set-piece was the difference between the two teams in the second half.
"Did we create chances, did we carve them open? No
We played better, but again it comes back to set-pieces and the mentality of the team to defend them."
Source : PA