The only way Corbulo survives is by using Lo,S to shift the wound onto a bike. Majority Toughnesd only applies for rolling to wound, which S 8 needs 2+ to wound either way. Rules using unmodified Toughness don't exist anymore; the was 5th Ed.
"Fetch me another plaything. This one seems to have broken." -Urien Rakarth
Space Marine- "This planet is ours, witch."
Eldar- "No ... This planet is theirs ..."