In a media talk at Adelaide on Wednesday, the former Test player from Zimbabwe felt the best was still to come from the Pakistani batsmen.
"They are yet to fire and I would like to think their best is still to come and if not then we wouldn't go too much further into the tournament," Flower said.
The Zimbabwean has been with the Pakistan team since last year and batting remains a major concern for the greenshirts as they have managed just one total of 300 plus in the World Cup, that too against UAE.
Flower also praised the performance of wicketkeeper-batsman, Sarfraz Ahmed against South Africa.
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"He was struggling for a while leading up to the match but he has come into good form and he is hitting the ball really well and he used his feet against the South Africans and he showed intent to take it to the opposition," he said.
"It varies with different players. With some players it is mental, with others it is technical, some players come under a bit of pressure, you can't say specifically it is a combination of these things," he said.
He said Ireland would come strong against Pakistan in their next game on a flat pitch in Adelaide and Pakistani batsmen needed to play big shots and attack and get boundaries.
He said he was satisfied with the performance of the players in Test cricket since he took charge.