Thanks. Yes indeed, that's where my curiosity lies - TW shows the swingweight on the Mid to be almost twenty units higher than the MP. How did Volkl manage to make the Mid, which has more mass in the head, swing easier than the MP?
Firstly, now that we switched, lets hope that the stalker yo-yo's don't follow....
To answer your question...are you ready for a long one...I prefer to give some background.
First off, you need a little perspective. All of our racquet mods are done with an on-site competitive mindset. Everything, is done with a competitive mindset. PERIOD. Therefore, there is no $5,000.00 USD Babolat Diagnostic Machine, because there are few of them on the road.
The first step is to always match personal specs when handed a new stick. However, without the machine, you only have your hand, balance point, and overall weight. SW calculations are bogus, or this question of yours would be unnecessary. Since we are all Volkl users, our mod MO is to add lead to the same places, in the same amount, but with being mindful for adjustments in balance and weight. We usually counter balance with lead under the grip. Once the lead is applied, we play.
Sometimes, the stick's inherent qualities produce differences in the player, subconsciously, which is fine, if the ball quality remains the same or better. When that happens, mods are frequently modified, and the player now has aa new set of personal specs. If it doesn't happen, we look at the mods. In this case, the PB 10 Mid vs the PB 10 MP, we quickly realized that the mods in the MP, made the stick clunky. In turn, we removed some weight at 2/10, and that solved the problem. Conversely, we realized that the PB 10 Mid, was too quick, so we added lead at the same spots that we remove tape from on the MP. This was all done by feel. Then, we put the sticks on the diagnostic machine, and we missed only by 1 pt in SW. That is how it should be done.
With the MP, I personally don't hit as heavy a ball, but I can put the ball anywhere I want, consistently, and rarely miss. With the Mid, I can grind the ball, and hit any shot that I need. Different sticks, although as close as they are, produce different results, on both sides of the court.
Now to get to your question as to "How did Volkl manage to make the Mid, which has more mass in the head, swing easier than the MP?"
For one, head shape design is a factor. The Mid's heft is more in the shoulders, and the MP's is more at 3/9, where it is wider, which shifts the "feel" of the racquet's center of mass further from the hand. Secondly, the nano carbon DNX's density, how much and where it is applied, is obviously a huge factor--just look at the DC in the London--which is the lay-up. You didn't see this huge difference with the traditional graphite 10 Line frames between the Mid and MPs, as the lay-ups and head shapes were very similar.
Now I could have easily answered your question. But, there are a tremendous amount of wannabes who aspire to be good players, but continue to think like hacks, and believe that they are deities on their public park's courts. However, if you aspire to be a player, than you have to do what players do--if not more--or else, you cannot compete; you are not even in the same league. If you aspire to be good, then do what ranked players do: by feel in your hand and ball efficacy.