You can't compare Tiger with Rock Airway (the s is missing!).
Tiger is a genuinly established LCC who sticks purely to its model idols SWA and RYR. There is no compromise. Rock meanwhile tries something like being LCC and quality carrier at the same time. In this sense you have to compare them more with Valuair, of which we know it had to fail. In Rock Airway(s) homepage you see an EMB 170/190 with leather seats and 2 abreast cabin
The reason why all these hybrid LCC models rise here in Asia (see also India!) is that the real LCC model is not understood or not accepted (by their promotors). On the other hand you see that only real LCC survived and will survive. So the future of Rock is easily predictable. You remember Valuair's CEO Lim testimonies ("we deliver quality at a low cost price", "passenger want comfort and service", "we would fly the world") to find out that this model has no chance, as sad as it is.
Good luck,
Dani