Matters not how they spin it, its how he will. The problem is Trump has enjoyed being able to essentially rub it in and take the piss on Twitter about how he won the election. This Russian hacking affair has now come to light and it has wider implications which has seen this Senate Committee have to be involved and reports to the President about it. But for Trump, being the defensive narcissist he is, he only sees this as potentially undermining the victory he has been so enjoying. In other words, he sees it in terms of the intelligence agencies saying that he would not have won had Russia not interfered. So he has gone on the attack, and sent these stupid tweets.
The real point is, that report and the hearings today did not even begin to speculate on whether he would have won or not, and that was not the terms of reference for it. in fact it explicitly avoided that issue. It merely reported the facts and has evidence about Russian interference. How he will deal with that, wait and see. Im sure he will make a further bell end of himself in trying though