He was definitely among the best for that two season stretch from '92-'94. With injuries and inconsistency among some of the other guys at the top, you could make an argument that his combined regular seasons and playoffs were better than anyone else's during that period.
Gilmour was one of the better centers in the league at the time.
But it's worth noting that while he received the odd Selke vote here and there, he never received more than a few votes in a season outside of 1992-93 and 1993-94. In those two seasons he finished first and then second in Selke voting.
And the major difference between those seasons and his other seasons? He scored significantly more points.
But he didn't do it at even strength. He did it on the power play. He scored even-strength points at a comparable rate per-game in 93-94 and 92-93 as he had been doing the previous couple of seasons. His sudden explosion on the PP, interestingly coinciding with the arrival of scorer and PP specialist Dave Andreychuk, would drive him from "by the way, this guy also got a vote" to "Winnah!" when it came to the Selke.
That clip is from the 1992-93 season. Here are some ES numbers for Gilmour's peak - that season and the following year (1993-94). I should note that this isn't a complete list of scoring leaders, so there may be players ranked above Gilmour in ES scoring that are not listed here.
Because Mario Lemieux was not playing the best was not that definitive for a while (before Hasek and Jagr took the title).
When that clip was recorded, Lemieux had just come back from mid-season cancer treatment and finished with 69 goals/160 points in 60 games to win the Art Ross. He may well have broken a Gretzky record or two if he hadn't had cancer. And that was coming off back to back Stanley Cup and Conn Smythe performances. I don't think there was any question or lack of definition in who was the best player in the world at the time. Gilmour may have been the best player *playing* though, as the Penguins had been upset in the first round by the Islanders.
As an aside, Ron looks so young in that clip. Weird to think that Cherry was only in his 50's at the time.
But even less than that am I a fan of flippant remarks about Doug Gilmour by a bunch of people who were either in diapers when he was at his peak in Toronto or who were too focused on their own team to see what they guy was doing in TO.
Let's not say he was the best player in the NHL at the time, but he may have been the gutsiest. The guy had no reachable pain threshold, was an outstanding leader, and one of the best captains in Leaf history.
Show him some respect.
Again, the HF boards prove that they can only check wikipedia, get the numbers, and decide where he stood in terms of ranking that way.