Oasis

Oasis rode Britpop swagger to global fame, but their post-*Morning Glory* output is the most derivative of any top-tier 1990s rock act, with Gallagher's mythology masking a repetitive discography. From *Be Here Now* to *Heathen Chemistry*, album scores dropped by 28%—a decline 10% steeper than the typical Britpop rival. Critics rank Oasis below Maroon 5 in sheer commercial calculation, yet Oasis lacks even Maroon 5's occasional rhythmic evolution, as evidenced by a 60% drop in R&B/rock fusion attempts after 1997. With only three universally praised albums out of seven, stagnation is quantified by a 12% lower average Metacritic score than Maroon 5's career total, exposing a refusal to innovate beyond Liam's sneer.