I've had Chatime in Australia, which seems to be more ubiquitous than here in Toronto, and you'd think for a multi-national company it would have some standards on how their beverages taste but sadly there's just no continuity.
I find the milk teas in Toronto to be more stronger in tea side when compared to the milk teas of the said company in Australia and that to me is a bit off putting. The only good thing is the consistency of the drink: not too thin/watery but not too thick/milky - too thick can be off-putting while too thin can make it feel like you're drinking water than milk.
Please Chatime: standardize the way your milk teas taste cos I have the feeling that you ain't using the same tea as your shops in other countries.