The seven-year-old took advantage of the absence of Big Buck's to surge roughly 20 lengths clear on the first circuit before the rest of the field more than halved the gap as the race approached Swinley Bottom on the second.
A good leap at the last kept Richard Johnson - riding in the place of the suspended Daryl Jacob - and his ride 14 lengths clear at the finish.
Trainer Nick Williams said after the win: "He's probably a better hurdler than a chaser, and his first run back was after recovering from an injury.
"It worked out nicely today as he had plenty of space and it was an impressive performance.
"We will go for the World Hurdle, but I always injure horses at Cheltenham - it's not my favourite course and he wants heavy ground, but he will have to take his chance.
"We will see how he is, as he doesn't necessarily have to have another run."
Later on in the day, Cause Of Causes claimed a hard-earned win in The Ladbroke.
Gordon Elliott's Irish raider produced a strong finish to snatch an extremely competitive 21-horse race, edging Petit Robin in the last stretch to record a four-length victory.
For complete Ascot results, as well as all the other Saturday winners across the UK and Ireland, click here.