Eichel is not in the same stratosphere with McDavid as a prospect. There is no comparison. The way their names are used interchangeably around here is a joke. To pick #2 this spring will be an incredible disappointment.
You're, almost certainly intentionally, overlooking why the names are used interchangeably. It is not because they are equals, it is because we want to finish last to guarantee at least one of them. "McEichel" is shorthand for "player we will draft if we finish last". It's quite simple. Secondly, I get the impression that you don't even really watch hockey anymore so I am curious what you're basing the comparison on. Drafting a franchise center is not going to be an incredible disappointment, just a mild one. One everyone has already prepared themselves for because there's nothing that can be done about it. Of course you'll spin it like it's some sort of monumental failure when a completely randomized event weighted slightly in our favor goes against us, as is four times more likely than not.
Eichel is considered by many to be the second or third-best prospect since Crosby. The top three are generally considered to be McDavid, Tavares, and Eichel with the order different on the last two depending on who you ask. I put Tavares ahead but Eichel is a better prospect than guys like Stamkos and MacKinnon. Even if he winds up to not be better than those guys and is, say, Stamkos 2.0... that's the best forward we've had in eons, a franchise player without question.