Air Asia CNX-KUL and KUL-CNX short turnaround.

Last week  I went to KUL from CNX and a few days later flew back to CNX.  I flew with AA because they were the only nonstop flight. As expected AA is a budget carrier so the experience(cramped seats and pay for anything in the cabin) was not great.   The surprising thing about this AA flight was from the time the inbound flight got to the gate at CNX the turnaround time was under 40 minutes.  This meant the the outbound passengers had to exit, the cabin crew had to clean the plane and the inbound passengers had to be seated.  On both flights it was a full cabin. I  spoke to the purser on both legs and she said the airline expects the turnaround time at CNX  to be completedI in 35 minutes.  As I was getting to my seat at CNX I saw one FA actually vaccuming the floor and another was actually wiping down the seats in the back of the airplane.   I have never seen an FA actually vacumming the floor of the cabin.  I guess this is one fo the many ways AA offers low fares.  Air Asia gets a lot out of it's employees and aircarft.  It looks liket they push both to it's limits.  Is that a good thing for overall safety?