I think many English beers I try are a bit older than they should be, but for many of them, the age means they take on a unique sweetness. I thought it was a feature until I tried a several-years-old Pete's Wicked Ale that was hiding in the singles section of a beer store.
Bewm. Same flavor.
Or, like I said, yeast strain.
"We are what we pretend to be, so we must be careful about what we pretend to be."