I am an Oiler fan. That doesn't make me wrong. Losing both those players (I assume Tkachuk would go for futures) would massive weaken the forward line up at least in the short term. The only chance the Flames would have to make the playoffs is if the Pacific remains a weak division.
The resurgent Kings, the Oilers and the Knights are the locks to make it in moving forward. The Flames must beat out improving teams like the Canucks to get that last spot.
Without Tkachuk and Gaudreau that task would be much more difficult.
At any rate I think I can objectively say the Flames are not cup contenders. Edmonton is still a few players away from that status and they're clearly a better team than Calgary.