NEW YORK – Marriott won over Starwood with a sweetened bid worth more than $14.4 billion just days after a Chinese insurance company appeared to steal it away from the hotel chain with a more lucrative offer. The buyout, which may still be contested by China’s Anbang, would create the world’s biggest hotel company and give Marriott a stable of tony properties run by Starwood, like the Hotel Del Coronado in San Diego Starwood, which owns Sheraton, Westin and St.