Possible Clues:

• Like the highest high
• Record-breaking autumn, apparently, hasn't begun
• Unsurpassed army officer hiding in a tree
• Like the most impressive records
• Great modifier? [detergents]
• Like some sports records
• What late-night barman will do clearing clubs is unsurpassed
• "The greatest of ___!"
• A couple of lines on issue raised may be so far unsurpassed
• Unequaled, ever