Across the first month of the Telstra Premiership season the Warriors have produced 40 minutes of football in each of their four games which has blown their opponent off the park.

The trouble for the Warriors is the game goes for 80 minutes.

That is why the Warriors are 2-2 instead of a perfect 4-0 to start their 2015 campaign, and why coach Andrew McFadden might have a few sleepless nights ahead of his side's trip to Melbourne on Monday night.

For the fourth time in as many weeks the New Zealand side produced a half of football where they failed to score more than seven points, ultimately costing themselves a valuable home win against Brisbane.

The Warriors’ attack was chalk and cheese across the two halves in the 24-16 loss to Wayne Bennett’s Broncos, with halfback Shaun Johnson struggling to explain the first stanza where they went to sheds 16-0 down.

"We just got out-competed in that first half I thought, and obviously it is always going to be hard to chase down a good side when you give them a 16-point start," Johnson said.

"Obviously we made a few basic errors and once the rain started coming down we didn't control the ball well enough.

"I thought that was where it was won or lost in that first half."

After racking up 16 unanswered points of their own in the second period the Warriors looked on track to record a big comeback victory.

Fullback Jordan Kahu, who came up with a handful of big defensive plays throughout the match, admitted the Broncos were powerless to stop the hosts' surge at one point.

"You know the Warriors are never out of the game," he said.

"We came out of the sheds in the second half a little bit lethargic and let them back into the game when we could have just held them out and put the foot to the throat.

"It was getting a bit worrying, they have some big boys and they just kept rolling and rolling and getting down our end."

But with the match on the line the youthful Warriors backline – which has been decimated by injury to start the season – couldn't keep cool heads, with Johnson shouldering much of the blame.

"It's pretty hard to be happy when you lose and I thought I just didn't come up with the right plays at the end of the game… again," the 2014 Golden Boot winner said.

"Composure comes down to your halfback ultimately, so it's pretty disappointing.

"But there were some good things I did out there today. Like I said through the first three weeks… I am building.

"The fact that we clawed our way back into the game and gave ourselves a chance to win was pleasing.

"There just wasn't enough composure shown near the end of the game when we needed it."

Meanwhile the Warriors will wait on scans to reveal the extent of the knee injury suffered by interchange forward Ben Henry on the hour mark.

Henry has a history of knee injuries, including a ruptured anterior cruciate ligament in 2013, and McFadden said the initial sings weren't positive.

"I must admit it doesn't look great, but we will get the scanned and see," McFadden said.

Johnson said the entire squad would be keeping their fingers crossed during the week.

"It really is [upsetting]… I think anyone in the club will tell you how nice Ben is," Johnson said.

"He is just such a hard worker and the type of guy you want to play with.

"I am hoping it's not too bad… hopefully we get some good news this week."