All I here are excuses of lower points because of a poor supporting cast. You are either driving a line or you aren't. Stop making excuses
If you don't know how to think critically, don't bother participating in discussion. This is one of several times that you've shown an inability to provide coherent responses. Again, if you don't have the ability to formulate and articulate an argument, what are you even doing here?
Anyways, proving that Eichel "drives his own line" is one of the easiest things possible.
Jack Eichel:
ES primary points per game: 0.43 (29 in 67)
Closest teammate (Ryan O'Reilly): 0.22
It's clear to anyone with a shred of common sense that Eichel is driving not only his line, but his team. He isn't racking up secondary assists - he's the one making things happen. This is evident if you watch him, but it's also evident through the results he's achieved.
Mitch Marner:
ES primary points per game: 0.32 (26 in 82)
With Marner, his own linemate JVR actually had more ES primary points per game. So while I don't doubt Marner is the driver of that line, the evidence says JVR is a key cog in the offense as well.
Inevitably, you are going to bring up the factor of ice time, which is a fair point to consider. So let's account for that.
Jack Eichel: ES Primary points/60: 1.75
Mitch Marner: ES Primary points/60: 1.40
Jack Eichel: ES points/60: 2.11
Mitch Marner: ES points/60: 1.94
So even when factoring in for ice time, Eichel still comes out on top handily. Then we have to note that Eichel draws the top checkers and best defenceman from the other team...Marner doesn't for Toronto, that would be Matthews.
Given your responses so far in this thread, I don't expect you to be able to a) comprehend this or b) formulate a reasonable response, but Eichel quite clearly not only "drives his own line", but does so to a much greater extent than Marner.