Yes You are right. Although 113 still have itz own demands, But,
Since the opening of NEL, ppl over at Lor Ah Soo prefers taking 53
home from Serangoon as no matter what, they do save by a few
cents.. and, no matter what, the freq of 53 is alwayz higher than
113 due to the fact that 53 serves the airport which is famous for
high freq of under 12mins during peak.