The Seattle Seahawks have delivered a convincing 43-8 defeat on the Denver Broncos, winning America’s biggest annual sporting spectacular, the Super Bowl.<br /><br />Even Peyton Manning, the much celebrated Bronco star who has been judged the NFL’s most valued player for the fifth season, could not stop the rout against his side.<br /><br />It is the first time the Seahawks have won the trophy – the Broncos last won it in 1998.<br /><br />What had been billed as a tight match pitching two of the NFL’s mighty teams against each other turned out to be rather a one sided event.<br /><br />More than 200 countries screened the match notching up an estimated audience of at least 100 million viewers.