Its obvious you haven't watched both teams much, if your going to say Easley is anywhere to close to the receiver Butler is. Nobody would even try to compare the two units or the top players within each unit. Yes, if you throw in the TE's Iowa gets closer and Fant & Hockenson are great end zone targets but they won't stretch the field like WR's. But in my post I never tried to compare the TE's and I said that was no comparison.
The reason Hakeem Butler's numbers are close to Easley is because the depth of WR's ISU had, and probably the reason Easley caught 51 balls is because Iowa didn't even have a 2nd quality WR(Vandeberg could have been the guy but he was obviously hindered by injuries from the previous year). Easley did some nice things but he has no where near the potential Butler does.
Butler only tied for 3rd in catches at 41 and Jones dipped from 37 catches in 2016 as a FR. to 28 last year(notice on the only possession Sat. night he took a screen pass 55 yards for the TD). Their numbers of course were going to be lower because last year he brought in 2 WR's Murdock & Eaton to an already stacked position. So last year you had Lazard at 71, Ryen 47(graduated), Murdock 41, Butler 41, Jones at 28 and Eaton who came on the last half at 21 receptions but 4TDs. Yes, Lazard, Murdock & Ryen moved on but most people feel pretty comfortable with the 3 WR's returning and a couple other new ones contributing more this year in Akers and possibly Tarique Milton.
We can credit part of the WR production at ISU due to not utilizing a TE in the passing game but nobody that watches the two teams will try and equate the Iowa WR's with the kind of production or potential the ISU Wr's have, that's just plain silly.