Question

458. There is the same amount of alcohol in a glass of wine,can of beer and a shot of liquor

Answer 1

Yes this is true but it would also depend on the size of the glass 
wine: 12.5% of 5oz = .625oz of pure alcohol
beer: 5% of 12oz = .6oz of pure alcohol
vodka: 35% of 2oz = .7oz of pure alcohol

Answer 2

It depends on what size of bottle you buy and how many ounces there are in the bottle/can.