Too much carbonation

Hi all-

I've got a question about carbonation:

I brewed a Scottish Ale a few weeks back, and for bottling used the 5 oz. of priming sugar included in the kit. When I cracked one open after letting it sit for the appropriate amount of time (2 weeks), I found it to be a little too bubbly for my liking. Now, I can't tell if it's because of the relatively low ABV (3.5ish%), or if it's something else. Could this be the result of too much priming sugar? I'm assuming the 5 oz. for a full 5 gallons of product (thus 1 oz./gal.), right? If I end up with less than 5 full gal., should I adjust the sugar accordingly?

A beer for your thoughts.

____________________________________________________
Primary: Pumpkin Spice Porter
Secondary: Imperial Blonde Ale, India Black Ale
Drinking: Scottish Ale
Up next/ dreaming about: White House Honey Ale

The volume of CO2 is determined by several factors
1. Stable Final Gravity
2. Highest temperature during fermentation
3. Amount and type of priming sugar
Best to use a calculator that you can find online:
https://www.homebrewtalk.com/f84/cps-brew-chart-3-0-a-224451/
http://www.tastybrew.com/calculators/priming.html
http://www.brewheads.com/calc.php