Actually KFC's changes to fast food affected its business through the region including Malaysia. the only difference is that there is no competitor's penetration other than Mac donald, further more, for some reason, the Malay culture likes chicken.
While A & W is still available in Malaysia, th number of outlets are very limited as compared to the 90s.
Maybe that's why the standards have fallen. These companies have strayed from their specialties. They are now just fast food outlets with little differentiation.
I still remember A&W of old. My favourite was their tuna burger which was served in a sesame bun. Who can forget their foot long hot dogs Their Mama & Papa burgers are in my opinion really better than MacD. They lost out to the superior marketing of MacD:( Toys sell better than food quality