Got to go with Tik here. He brought a lot to the table when the chips were down. I want him on my team.
He was as dominant at times as Kurri and Messier on the Oilers after Gretzky left. Tikkanen was about a ppg player at his peak and better in the most important situations while also being perhaps the best pest in the NHL, and being an elite defensive forward. To me Tikkanen is a borderline HHOFer if he had a bit longer career (at least with the current standards). The answer to Clark Gilles if he had been on the first two Oilers Cup teams. 72 playoff goals. 5 Cups with 4 as a key member of the team. He trumps the other 3 quite easily in my opinion. And the other 3 are great players. Numminen gets underrated. He was a great puck moving D-Man that was not weak defensively. Timonen is a tank and Lehtinen could score goals and check.
To me Tikkanen is nearly as much a part of the Oilers Dynasty as Coffey, Kurri, Messier, Anderson and Fuhr. He wasn't really a part of the first two championships but was HUGE in the 5th one. He was key in getting the much weaker Oilers to the Conference Finals after 1990 for a couple of years. Key in the Oilers-East Rangers Cup win.
I guess I am biased since he was one of my favourite players. An all-time pest and a player who will never, ever be forgotten. He invented a new language!