Sai Masu Gida suffered their first defeat in seven games crumbling to a 2-0 defeat at the Rwang Pam Stadium against Kennedy Boboye’s men who opened a five points clear on the log.
Isah who left Plateau United to join Kadiri Ikhana's side this season attributed good management and quality players to the impressive start of the Jos-based side this term.
"I'm not surprised about what Plateau United are achieving this season,” Isah told Goal.
"I was there last season and I know what they are capable of doing - so I'm not surprised seeing them doing great now.
"They have good players before I left and I believe they retained most of those players and bought some good one this season.
"I believe those players would really get them going this season. They have young talented players that are hungry to play and a great management.
"Their management is fantastic and got hungry players. The management knows how to motivate the players to play well because that is what they did while I was with them.
"I believe they are very capable of challenging for the league title. Though, the aim of all the 20 teams is to win the league title including Kano Pillars.
"Nobody expected Rangers to win last season. Remember, Ocean Boys came from the lower division to win the league title and Federation Cup.
"MFM, ABS can challenge for the title same as teams at the bottom end of the log."