The type and amount of funk varies due to a multitude of reasons, vintage, age, and brewery being the three biggest in my opinion. You need to keep in mind that gueuze is a blend of (typically) 1,2,and 3 year old lambic. Generally, the older a lambic gets, the less sour and more funky and refined it gets, so a fresh gueuze with a higher percentage of 3 year lambic in the blend may be funkier than a 2 year old gueuze with higher percentage of new lambic. The magic of it all is that these master blenders can pick from hundreds of barrels and produce thousands of bottles a product that tastes relatively consistent from year to year. That being said, its completely possible to get two completely different tasting bottles of the same vintage due to the complex interactions that occur after bottling.
In short, there's a lot of variables. Drink as many bottles of gueuze as you can and you'll be happy.