spoiler: they are, by far.
Just a couple songs that are up there in popularity but not the most known:
Art of Storytellin', p4:
There's not a way to make these two bad together. At all.
Some other good songs highlighting individual efforts.
Play the Guitar (B.o.B. feat. Andre 3000) - A theme with Andre's songs more so than Big Boi's is the hyper, quick stringy beats. He loves rhyming in a disjointed, choppy flow. :
All Together Now (Andre 3000) - This song is pretty weird, but in the best way. : https://www.youtube.com/watch?v=RcxkJxRfr2g
Benz Friends (Future feat. Andre 3000) - Andre goes straight up verbal abuse. :
The Real Her (Drake feat. Lil Wayne & Andre 3000) - I don't care much for the song, Andre's verse is last. :
Throw Some D's Remix (Rich Boy feat. Andre 3000, Jim Jones, Nelly, Murphy Lee, & The Game) - This song isn't the most bearable, but the positioning of Andre at the start means you don't have to skip around : https://www.youtube.com/watch?v=HtoknEAKoc4
She Hates Me (Big Boi feat. Kid Cudi) - A pretty good song on behalf of both artists. I'm biased though due to it being two of my favorites coming together. :
In the A (Big Boi feat. Ludacris & T.I.) - Eh, standard song for these guys tbh. It just highlights Big Boi's difference in style from Andre. :
You Ain't No DJ (Big Boi feat. Yelawolf) - Big Boi is almost as unorthodox as Andre when it comes to beats. :
Shutterbugg (Big Boi feat. Cutty) - This is probably the most similar song he has to Andre without actually being in the same song. :
Shoes For Running (Big Boi feat. B.o.B. & Wavves) - just to show what each artist comes up with for a B.o.B. collab; I think Big Boi wins. : https://www.youtube.com/watch?v=kjgrc9zPxFs