Not surprising given how average the song is. They need to be braver. "The Blackout" or "Red Flag Day" for modern rock.
"Lights Of Home", "Summer Of Love", "Red Flag Day" for pop or international markets.
I think the best chance at being a radio hit is Summer of Love followed by Love is Bigger. Here's what my strategy would have been:
Fall of 2017 - The Blackout: Alternative, Active Rock and Triple A would have loved it. AC/HotAC it might have made some traction but ultimately it wouldn't hit the top 30.
Winter 2017 - Love is Bigger Than Anything in its way: Triple A, Hot AC/AC would love this and it might even have a shot at crossing over to POP. Alternative and Active Rock it would struggle to make waves on.
Spring 2018 - Summer of Love: Triple A, Hot AC/AC would love this and it would have a good shot at crossing over to POP. Alternative it's 50/50 on if it would be a hit but Active Rock it would struggle to make waves on.
Mid-summer 2018 - Little Things: radio as a whole would be revolutionized by this song and it would hit #1 on all formats, including Latin! I kid of course but this song is too good not to release, regardless if it takes off. However it should be released AFTER a successful single if possible as it would be given more of a chance ("hey, here is the follow up to the hit Summer of Love")
Late Fall 2018 - Red Flag Day: Alternative would love this song and AC/Hot AC and Triple A might also take to it.
I get that they are almost 60 and I get that Bono is looking less like Robin Williams and more like Yoko Ono but there are a lot of good songs on this album that really can be singles. Yeah, maybe they get some play and fall off the charts, whatever, but these songs I mention above are some of the best stuff these guys have done since Achtung Baby (IMO) when it comes to mainstream appeal.
Best Thing is a good radio song too(hell it was the 122nd AI ranked I the US at one point). I don't think they made a mistake with that one but it's not better than all the songs I mention above.
GOOYOW is also a good song but as much as I like it, it is rather tame, especially compared to the songs I called out above. Now, if they were able to give it life live like they do with so many of their songs, then it would work....but the Grammy performance (which was solid) was evidence that this song is not going to be a high point live.
I know a lot of posters hear Love LOH but that song comes off very generic to me and I wouldn't put it ahead of any of the songs I listed above (even Best Thing or GOOYOW). Also, the strings version is >>>>>>Album Version.