The first curve depicts the "normal" run getting pattern; i.e., when there is no interruption and the side is expecting to bat its full quota of overs.
On 13 December 2010, it was reported that the BCCI had decided[2] that Jayadevan's system will be formally used in the fourth edition of Indian Premier League but it was not.
The Jayadevan system has been put before the ICC in the past, but the decision was made to retain the Duckworth-Lewis method.
Generally speaking, nobody has been able to successfully argue that either the Duckworth-Lewis Method or the Jayadevan System is significantly superior to the other, with most assessments concluding that their performance is reasonably similar.
The "target" curve considers only the percentage of overs played; i.e. no adjustment is made according to the number of wickets lost.