People with Defined Benefit pensions can earn twice as much as those with Defined Contribution pensions

Expected annual retirement income of two people retiring at 65, who both earned an average salary of £30,000 for 45 years but were enrolled in different pension schemes.

Based on employee and employer both contributing 4% of gross employee income into Defined Contribution scheme, and pension drawdown being fully used up in equal annual amounts by age 85.
Source: PensionBee