One of the major factor in failure of Liana was its engine (M13A). Why loving it in Swift? Originally the Swift which is also released in India is having 1.2L third gen. engine (K12B) with technology similar to VVIT of Toyota or iVTEC of Honda. Its not released in Pakistan, its just the body. Suzuki is just putting the left over engines of Liana to rip the people of Pakistan.
The award that Swift won is with that 1.2L third gen engine.
You can confirm these facts by googling around !