As the title says, I cannot detect a pattern, but when I am designing Naval and tanks -- when you hover over the components they will give you some number and it does not match the impact to the STATS screen on the right. Sometimes the numbers are correct, but positives get mixed with negatives. It is frustrating especially when dealing with things that are hard to understand like the Front-Wheel-drive stuff versus Rear-Wheel-drive.., all kinds of stuff. You can still design but you frequently need a piece of paper to write down what is really going on. Not game breaking, but man, it makes the micro unnecessarily too micro-eoy.