It may not be a popular opinion, but I think the only way that Eichel has a real shot at 1 is if he moves to the QMJHL after the World Juniors.
He has two things going against him playing college all year. One is scalability (ie what do his point totals means compared to McDavid's and compared to previous prospects (McDavid's start is already being compared to Crosby's draft year start)) and his visibility (17 regular season games remaining vs 27 in the CHL season after the WJHC plus a single elimination tournament versus best of 7).
In the QMJHL, he'd either play for Saint John (which has a young up and coming puck possession team which could make him look good) or Quebec (which is guaranteed a spot in the Memorial Cup), likely his choice.