Pestilence were known back then for jumping on the latest trend at the time. When Death were releasing Human and Individual Thought Patterns, Pestilence did a melodic death album, when Cynic's Focus landed, they copied and did a jazz fusion album. Because extreme metal is popular again, Resurrection Macabre followed a similar suit.
While Mameli is a talented dutch musician and massive self-promoter, the trend hopping cheaped them a fair bit. I mean he had another solo project C-187 which was metal and gangsta rap. Rubbish.