The critical part of the GOP controlled Senate so-called investigation verbal conclusion is the term "direct evidence." This means that where the GOP totally controlled the process, refused subpeonas and avenues of investigation requested by the Dems, etc. somehow they were able to come up a smoking gun-something that is rarely found in any sort of conspiracy/collusion investigation, even one that isn't a whitewash.
The best one could say about the Senate "investigation" is that it wasn't so blatantly part of the Trump defense that the House GOP controlled one was (remember them subpoenaing the FBI and Justice Department's evidence while the case was ongoing-so they could turn it right over to the Trump defense team, the chair publicly running to the White House for marching orders, then recusing himself, then unrecusing himself, etc.
I'd say the far more significant news today is that the trial judge has concluded Manafort lied to the Mueller team after entering into his cooperation agreement. Expect an effective life sentence for him on March 13th-and a Trump pardon when and if he thinks he can get away with it.