Looking at the last two Super Bowl winners, they both have a great top outside WR (Hill and Evans), but I would argue that what made those offenses special (besides their QBs, which are no small thing of course) is that they had a variety of weapons that put a lot of stress on DCs.
KC had Hill, but also Kelce who was a matchup problem, a QB who could scramble which takes some bite out of a pass rush, and their 3rd and 4th options were good enough to win the matchups against the 3rd and 4th DB's.
TB had Evans who led the team in rec, yards, and y/rec, but also had Godwin, Brown, and Gronk.
If either of those teams had just had their number 1 guy and then a bunch of JAGs, they would be a cake walk (relatively speaking) to defend for well coached and talented defenses. BB excels defending those kinds of offenses, where he really only has to worry about defending 1 guy and saying, "If you beat me with the rest, so be it." EDIT: This reminds me of the documentary too about the 2009 Patriots. That team had a lot of problems, but BB specifically talks about in a meeting with McDaniels (paraphrasing): "We need to get someone else going, because if you double Moss and bracket Welker, we've got nothing." Arguably the best 1-2 punch at WR the Brady Pats ever had, and without adequate guys behind them, they were "easy" to defend.
So those guys are valuable, no one should dispute that. But give me 3 or 4 solid weapons over 1 great one any day. Hopefully the new blood this year can be that, but they've got a lot of gelling to do before we'll see.