def verify_capabilities(capabilities):
    """
    Filter and rank capabilities based on performance metrics.

    Args:
        capabilities (list): List of tuples containing capability names,
                             execution times, memory usage, and scores.

    Returns:
        list: Ranked list of capabilities.
    """
    return sorted(capabilities, key=lambda x: x[1], reverse=True)

# Example usage
capabilities = [
    ('evolved_verified_generate_test_1768680667', 4235.89001196408, 51, 8305.7),
    ('verified_default', 4235.0, 51, 8303.9),
    ('evolved_verified_fib_fast_1769055768', 4235.0, 51, 8303.9)
]

print(verify_capabilities(capabilities))