Dude, you asked for evidence, I provided you with such. The rest is upto you to accept or not.
The question was, can the Su be fast enough to down a passenger airliner flying at cruising speed. The answer is yes.
Is it definite that the MH17 was downed by an Su25? The answer to that is maybe. There was an Su present when the plane brought down, as proven by the Russian ATC and eyewitness statements. But no one can be 100% certain at this point in time.
Now as far your assertions that in the documentary the commentator doesn't say that the plane is not diving when it's doing Mach 1 is illogical, no one makes statements based on diving speed. Also there is no need for an American channel/ reporter to biggen up the Su25. They are not part of the sales team, are they?