As far as opportunities go, yeah he is right up there among the worst playoff performers of all-time when it comes to star players. Forget Marcel Dionne, yeah he could have maybe put a big series together and helped the Kings win one at least since he never won a 7 game series in his career, but to be fair the Kings weren't ever considered contenders, and he did get 7 points in 5 games in the win vs. Edmonton in 1982. And had 14 points in 9 playoff games in 1977, doing well against Boston to boot. Not a good resume no, but not expected to have a good one either. Matthews is different. He's always on an elite team going into the playoffs. There have been countless years that a goal or two from him at the right time changes the series. 2-14 record when being able to close out a series is just a horrible one-sided stat.
Matthews reminds me a bit of Joe Thornton that way. Thornton's numbers weren't horrendous, but like Matthews he was always on a good team and never took it to another level, not once. He never seemed to play inspired hockey when it mattered. Never played mean, which is strange because he could be mean if he wanted to. We all have seen Matthews drop the gloves vs. Stamkos a couple of years back. It was ugly. But it wouldn't hurt to see him throw a hit or two.
Yeah, he's up there when it comes to playoff disappointments. I always say one playoff year can change a perception. Datsyuk comes to mind, Alfredsson even. Plenty of players who proved they could eventually do it.