It wasn’t just a treble. The path for each competition was as hard as possible. The champions league groups involved Barcelona and Bayern, knock out involved inter (Ronaldo and co) Juve (Zidane and co) and Bayern in the final. FA Cup had the main rivals Arsenal and Liverpool. The premier league went down to the last day facing an amazing Arsenal side. Not to mention how the Liverpool and Arsenal fa cup ties ended, Bayern final.
United treble team lost 5 all season including charity shield, undefeated in champions league against Bayern three times, Barca, Inter and Juventus. In FA cup we were unbeaten knocking out all top 6 teams including Liverpool, Arsenal, Chelsea and Newcastle. There is simply no comparison, this Liverpool team already lost 7 by March against teams like Watford, Napoli, Villa etc
Like I said not just a treble. Something out of a movie. I actually think 07/08 side was better. Everything that could go wrong in the Portsmouth fa cup-tie did and just didn’t work out. Subsequently Pompey went on to win the cup and Utd won the double.