Kevin Owens can be accused of doing too much in his matches.
His frog splash looks as spectacular as it does brutal, but it's not his finish. It's more or less an empty and not altogether credible way of engineering a near-fall. It's as if Owens refuses to acknowledge that he is a proper physical threat purely because he has the ability to wrestle as if he's far smaller. Those matches are invariably very good - but his act would benefit from reining in the self-indulgence and accepting that he's something beyond the physical norm.
Conversely, Randy Orton can be accused of doing too little in his matches; his trademark methodical approach all too often results in tedium, even if his bouts are easier to believe in. Neither man has achieved the balance required to achieve true greatness, and while Orton's fleeting moments of greatness are conditional on his opponents, a match opposite Owens might represent a perfect reconciliation - a best of both worlds chemistry. Owens would also represent a gritty and much-needed antidote to the supernatural silliness that has been Orton's feud with Bray Wyatt.
They've fought on TV before - this is WWE in the modern era, after all, everybody has wrestled everybody already - but the pairing (more so than most) would benefit from raised stakes.