Y'all?  I did the research so you don't have to...

A big bag of chips (in this case, specifically Ruffles sour cream and onion) does NOT taste the same as the small bag.  The chips are bigger in the big bag and so they taste more potato-y and there is probably less flavour stuff per chip surface area and just... small bags for the win.

There.  Now you don't have to go get a big bag and not finish it.  I did that for you already.

Small bags for the win!