SB vs BB who wins?

273 said
Think he's trying to compare cid in different b/s/r ratios so 408 vs 400, he did give a 413 as an option 3.75 crank and still a better size.

Exactly.

Also, people like to poo poo the 413 because of the " small " bore. But there's been many hard running 413s to be sure.