"Influenced" as per "tried to and failed miserably" or "actually did damages, like China back in 2014?".
No, that's not what it means. Intelligence agencies claims that Russia's tried to influence the election, but fails to give specifics. Assange says that what they published did not come from Russian or any states parties sources. What the government tries to say is that they may or may not be related to any documents sent by wikileaks, although they've removed all and every mention of wikileaks from their documents.
So, what Trump actually says is that he do not believes the DNC/Podesta's hacking comes from Russia, as per stated by Assange. Which is the limit of his claim. Anyone trying to see further than that is making deductions about the psychological profile of Trump. Simply put, you cannot.