You're... kidding, right? With +5 attack Jolly 252 Atk Daikenki hits like 1400 attack with Torrent activated hits 60BP then factoring in STAB, that's 90BP (correct me if I'm wrong). That should be doing some serious damage...
Daikenki hits 1046 Attack at +5 assuming 252 Attack EVs.
With Torrent boosting Aqua Jet by 1.5x I'm going to assume he used it against something resists water and has a ton of bulk.