It is easy to understand why AC is playing the best bass lines for U2.
I love 8th note, root, basic riffs playing. Locked with a simple drum pattern and pumping guitar there's nothing better at making the hairs stand up on the back of your neck, from Elmore James to U2, ZZ Top, Quo, AC/DC etc etc.
There are a lot of great bands that use a rhythm section in this way, because it's a very effective style of playing.