There is an obvious difference in how I and V+ on one side and MM and Ivo on the other side view and value the objectives of the Game of Diplomacy. However I don't think this is the only or even the main reason of our inability to understand each other in this particular game. I strongly suspect that the differences in our views were amplified by a couple of unnatural aspects of the game that created a special kind of psychological stress.
First, due to Austrian civil disorder it has soon become apparent that Turkey must either win or be included in a draw. Perhaps the word "must" is not absolutely correct, but anyway, cooperating with Turkey on a draw was definitely much easier way to an acceptable outcome than fighting him. A 3-way draw of E-F-T seemed to be almost guaranteed.
A little later Russia, that was one of the cornerstones of the temporal balance, left the game in very unpredictable manner -- s/he basically gave two important centres to Turkey for free, because s/he wanted to leave the game as quickly as possible before holidays. It was the first shock for me, but I still believed the game is a forced 3-way draw.
Unfortunately I missed the first turn after Russia's suicide. I don't know how that happened and I even suspected a bug in the system, but this is not important any more. Which is important, is that the balance of powers radically changed and a 3-way draw of E-F-T was no longer guaranteed or even likely.
And in this very point I made the decisive mistake, because I was not able to adapt to the new situation as quickly as necessary. We (I mean F+E) had to start cooperating with Germany and Italy immediately, but we didn't, and once we tried it a little later, it was already too late.
I believe that this psychological aspect explains my and Ivo's inability to understand each other better than our different views of the game objectives. Germany has been playing a lost game until then and his mind was too focused on giving solo to Turkey if possible, while I've been playing a guaranteed draw and my mind was overly focused on eliminating Germany as a necessary step to this draw.
That's also why I and Germany considered one another a totally untrustworthy partners. He insisted on guarantees that I won't eliminated him (as I've been trying all the game before), but I didn't want to eliminate him any more and thus I didn't understand, why would he need such guarantees. On the other hand, I insisted on guarantees that he no longer wants to give a solo to Turkey (as he wanted all the game before), and he obviously didn't understand me.
Well, it was not a good game for me, but it was definitely one of the most interesting I played here this year.