Might be just me but I've always thought the Vickers had the best accuracy of all MGs. Its gotten even better with the new "Take Aim" ability.
I feel like I win most of my MG vs MG duels with the Vickers. It wins more than it loses.
Accuracy for MGs doesn't really matter an awful lot since ROF is equally important to deal damage.
The Vickers deals more damage than the MG42, so it should win an engagement. Another plus in this regard is that the CD and reload have a slightly smaller share of the whole cycle, meaning that the suppression modifiers do not hit it as much.
On-topic:
I don't think there is an issue with Centaur suppression. The ability is hard to aim and time. I never use it to be honest.