I expect a long series (six or seven games), but I think the Oilers will win out. (And no, I won't be changing my mind if the Oil lose game one.)
Even if we call their top-end scorers about even, I think the Oilers have more gritty, veteran-type guys (Kane, Ekholm, Perry, Ryan... if he plays) than Vancouver, and I think the experience and grit will be a factor in a series like this with such high-pressure on the teams.
The Oilers' top guys are also really, really hungry and desperate for another crack at getting through the final 4. I think the Canucks' mentality is more like, 'Thank God we got through the first round with our back-up goalies'.
I also think that the series goes longer. But I suspect you realize that the bolded assumption is being quite generous to the Canucks. Looking at their players with 50+ points this year and go only by production you get the following:
Miller 37 66 103 <-> Draisaitl 41-65-106
Hughes 17-75-92 <-> Bouchard 18-64-82
Pettersson 34-55-89 <-> Hyman 54-23-77
Boeser 40-33-73 <-> Nuge 18-49-67
does give a small edge to Vancouver. If you go by numbers over two years it looks like
Miller 69-116-185 <-> Draisaitl 93-141-234
Hughes 24-144-168 <-> Bouchard 26-96-122
Pettersson 73-118-191<-> Hyman 90-70-160
Boeser 58-70-128 <-> Nuge 55-116-171
so advantage slightly to the Oilers. The elephant in the room though is the guy missing from the Oiler's list above.
In a 7 game series of course things can be different. Bt from a historical perspective top end talent is definitely on the Oiler's side. Especially as you say given the way 97/29 tend to elevate their games in the playoffs.