I've done a side by side tasting with cans and bottles. The canned beer tasted muted compared to the bottled beer. The flavors were more pronounced and distinct in the bottled beer.
Perhaps it was not apples to apples. The canned beer may have been older, or not handled as well as the bottled beer.
The cans sure are more convenient for backpacking though. After a few miles of humping photo equipment across the lava flows, even Torpedo packaged in a ziplock baggy would taste like nectar.