That's a great win against a very experienced pair. Coetzee is ranked 53 in doubles, has 3 ATP doubles titles to his name and has been runner-up a further 6 times including Newport this year. Wassen is ranked 45 in doubles, and won the title in Auckland earlier this year.
Given those stats, it was an excellent performance to beat them in straights and very impressive that it could have been even easier if they hadn't lost their serve twice in set 2