I am the owner of WagonR, and I am keeping my eye on these stats as well on pama.org.pk. Here is my answer and analysis on WagonR.
In Pakistan people prefer shape more than features and value in car, Its sale is slow due to this vary reason, plus people still do not have knowledge about what to seek in a car. WagonR round and square completely better than cultus. I want to also add here that THIS shape/Height of WagonR is useful.
WagonR will catchup in sales after some time, this will not be flop as Liana because of number of reasons.
1) Already doing well in india since 2000, it is 5th most selling car in india, it is well received in Indonesia as well. Both Asian countries with similar living conditions.
2) LPG and CNG can be installed and its works well on it, I have read reviews on indian forum about this.
3) It is small car unlike liana for which WagonR is not competing against any brand new car except cultus.
4) People do not hate its shape, they are bit reluctant. No one from my friends and family dislike its shape, they did not loved its shape but they did not hate it even.
I appreciate your analysis and sane people think like that to come to conclusion, I did the same and bought my very first car WagonR, Alhumdulillah I am loving it!