Er...what does playing in a certain game mode have to do with pilot federation ranks? I'm pretty sure it's not connected? If you're talking about subjective ability to pilot a ship, that can just as easily be learned in solo as open - probably easier in solo, really, considering you're not having to worry about being interrupted while you train yourself.
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Do you even realize that idiots like you that go out of their way to be rude and offputting at the drop of a hat are the very reason Mobius exists in the first place? Or does that fly right past the head of buffoons who define fun as something that comes at the expense of others?
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Well, firstly, there's great people to be found in Mobius and other large private groups, like the Sovereignty (formerly TIIQ). That ain't something unique to Open mode!
Secondly, I'm going to be up-front with you here - combat balance is currently a shambling, bumbling mess. Hitpoint inflation is through the roof, weapon special effects are gimmicks galore, Engineers make any ship perform *exponentially* better than it would in base game...I could go on and on, but the bottom line is that's all very, very, very bad for competitive PvP combat, and extremely conducive to toxic forms of PvP like your ganking at that station - that was *only* possible thanks to Engineering.
You can wish to be toughened up all you like, but it's not going to fix any underlying balance issues that enable the event in the first place. Personally, I say spare yourself the frustration in the long run. And get to a place that doesn't include toxic people like Mr. Phisto here.