Drifting somewhat , but all the mashing, brewing and conditioning is done in metal vessels when done commercially. If samples from the same brew were stored for a couple of months in a bottle and cans, then compared while drinking them from a glass , I don't reckon there would be any difference.
I think I might have a look at this while I have a moment or two , drinking for science .
To drag back on topic, just about , are vintage wines ,better, tastier etc , I doubt it , just that the investors in wine snobbery need to protect their investments .
Snobbery , mines better than yours because I'm a snob