Lets start with a comparison of PTE with IELTS and PTE.
Pearson is a test not similar to IELTS and TOEFL. It has similar modules and one can say that they are tested in similar fashion but the mode of testing candidates at the PTE is completely different.
It slightly resembles the TOEFL but it does not completely the pattern of TOEFL.
In its pattern it is much different when it conducts the tasks of repeating sentences in speaking.