ORIGINAL: Nanaki
Let me try to explain how location-based benefits work.
Basically, Your research labs have locations. If you put a scientist with +25% High Tech at that location, then your location bonus is +25%, this bonus is empire wide. Note that multiple locations will compete eachother with bonuses, as only one bonus can be applied at a time. So that location with +25% High Tech automatically ignores all those other locations that have less than 25% high tech. So that 17% High Tech Gas giant? Worthless. Note that you can stack scientist skills with innate location bonus, so you can assign that +25% High Tech scientist to that location with +17% High Tech and get a total +42% High Tech bonus, which, again, means that any bonus below 42% is ignored.
What wonders do is provide a +50% Research bonus to that particular field. So assigning a +25% Scientist to a planet with +50% gives you +75%, which will apply to your whole empire. As I said previously, it also makes any location with below +75% research bonus completely worthless.
The end result is that, due to nerfing it to 5%, if you have a research 'location' that has 5% or above bonus, then it makes the wonder completely useless.
In my opinion, your exemple work only for research lab. The wonder is a bonus over all this, when i check the research Summary.
