Did you even read my breakdown? I'll explain the concept more thoroughly.
If you claim that your bodyfat percentage decreased by 7 points, and you said you gained 17 total pounds, then that inherently means you're claiming you gained more than 17 pounds OF MUSCLE to gain that amount of weight. This is what I'm saying didn't happen. Your bodyfat measuring device is wildly inaccurate.
If I take a long break from lifting, and start again with the intention of gaining muscle/strength, I usually put on right about 10 lbs of water/waste weight in less than a week (drinking more water, particularly during workouts, and eating more food).
After I put on this weight, I can start measuring my lean gains. So if it were me, eating at a caloric excess that allows me to add about a pound per week (this would account for your weight gain), I don't believe I could expect anything more favorable than a 50/50 muscle/fat gain. This would equate to a gain of 3 1/2 pounds of muscle over the 7 week period. This is what I think you gained. My original post suggesting you gained 6 lbs of muscle was being very, very generous.
Keep up the good work on your lifts, those are solid improvements.
I do see the tanlines, so you're obviously not trolling.