No doubt the forward groups are comparable, but your comment about the defense is where the difference lies and that difference is important. Because Rantanen took 9.2 million, Landeskog took 7.0 million, Mackinnon took 6.3 million and Kadri to 4.5 million, they could afford to pay all of Makar, Johnson, Toews and Girard, with Bowen being a rookie, obviously. Murray is the only one in the group who is "meh", but he's paid accordingly.
Top 4 Toronto forwards...
Matthews (11.6m)
Tavares (11.0m)
Marner (10.8m)
Nylander (6.9m)
Total: 40.3 million
Top 4 Colorado forwards...
Rantanen (9.2m)
Landeskog (7.0m)
Mackinnon (6.3m)
Kadri (4.5m)
Total: 27.0 million
That 13 million dollars is a hell of a lot of cap space to build a top notch d-core. They've got some tough choices coming up, but to this point they've managed their cap really well and they've drafted ridiculously good, especially on the back end.