John's stuff from 1980 doesn't sound "tentative" to me either. In fact, to these ears and this heart, if you combine all the tracks from "Double Fantasy" & "Milk & Honey" (toss in whatever extra tracks from the 1975-80 period leftover unreleased demos or Threetles tracks- "Real Love" especially & "Free As A Bird" too) and there you have as great a solo Beatles work as there was. Check it out: "Grow Old With Me", "Watching The Wheels", "Woman", "Nobody Told Me", "Clean Up Time", "(Just Like) Starting Over", "I Don't Wanna Fact It", "Borrowed Time", "Beautiful Boy (Darling Boy)" "I'm Losing You", "Dear Yoko", "I'm Steppin' Out", "Real Love", "Free As A Bird", only "(Forgive Me) My Little Flower Princess" sounds like something less realized or tentative to me.
The 1980 Lennon, along with "Imagine" are my fave Lennon works. Only "All Things Must Pass", and "33 & 1/3" by George rate that high for me as far as Beatle solo works go....though "Plastic Ono Band" is, objectively, a masterpiece as well (prefer the others myself) and "Brainwashed" isn't far behind either. I'm quite a fan of most of "Mind Games", and "Walls & Bridges" as well.
I also have to come out here a a pretty big Yoko fan. Alot of her earlier stuff was really hit, and miss for me...never sustaining a complete great work...but, for me (and beleive me I understand those who don't hear or feel it) she really stands up tall with Lennon here. The whole "Heartplay" dialogue thing really works for me here. I LOVE both albums most all the way through. There are a few lesser Yoko moments, but few and nothing that really misses totally for me. What an amazing double album those two albums (DF & M&H) make. Blessings!!
Om Namah Shivaya !!!!