I haven't seen any threads of grey/stem personally they were awesome, so thought of pitting him againts electra herself

Note:electra is pre black sky and stem has full control of Grey's body,

NO weapons for both of them.

I don't know if this is fair or not so do let me know.

Elektra is essentially peak human capabilities anyway, esp in an H2H fight where she is a master martial artist. My understanding is Stem is essentially capable of operating the human body in the most efficient way possible but we saw how it required Grey's help when it was confronted with a certain mechanical or creative problem to solve. Given that Stem is in full control and wouldn't have Grey's human innovation, I'd have to give it to Elektra here. But it's an interesting battle for sure. I wish we could have seen more of Stem's capabilities, as there are many other implications of an incredibly smart computer fully integrated into a human's nervous system

Although I just answered another thread saying Stem would beat the Punisher but the prompt there outlined that they were literally in a bare concrete room H2H only so there was nothing to improvise that would give Frank the edge. So I guess i'll have to say it depends on the situation