At 16/17, Fantilli was absolutely not on Eichel's level. Heck, Eichel's 16/17 year old numbers were even better than Bedards:
In their D-1 years:
Eichel (USHL)
24gp 20g 45p
68p 154p pace over 82gp
NHL equivalent: ~48p
Fantilli (USHL)
57gp 37g 74p
53g 106p pace over 82gp
NHL equivalent: ~33p
Bedard (WHL)
62gp 51g 100p
67g 121p pace of 82gp
NHL equivalent: ~41p
Honestly, as a prospect, Eichel was every bit as promising as Bedard, if not more so. He dropped 71p in 40gp in Hockey East - that's a higher PPG than Bedard currently has while playing in a much more difficult league to score in. Bedard would need to score 140-150 points in the WHL this year to match Eichel's NHLe from that season. Factor in Eichel's size and power advantage, and he would probably be drafted ahead of Bedard if they were eligible in the same year. Same goes for Matthews as well.
For the top forward prospects from the 2015 - 2023 drafts, I think the consensus probably would have gone something like this (
assuming this is at the start of their respective draft years, and ignoring nationality).
McDavid
Eichel/Matthews
Hughes/Bedard/Michkov
Lafreniere/Wright
Hughes actually had the highest NHLe as a 16 year old of that group and absolutely shredded the U18s, but he was also a bit smaller like Bedard, which hurt his ranking as a prospect. I would call it a coin flip between Bedard and Hughes.
Here is how their D-1 and D0 NHLe's stack up thus far (obviously a small sample for the 2023 guys)
View attachment 599963
Wright didn't play his 16 year old season, but his 15 year old season was around 30 NHLe and his 17 year old season was around 40, so he probably would have fallen somewhere in that range.
So yeah, Eichel was pretty clearly ahead of Bedard.